Best Free Application Development Software - Page 38
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Compare the Top Free Application Development Software as of May 2026 - Page 38
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1
UndercoverCI
UndercoverCI
Actionable test coverage for Ruby and GitHub. Checks and insights to help your team ship healthy code while saving time on PR reviews. Stop focusing on getting to 100% test coverage. Reduce pull request defects by telling when the changed code is untested before it's deployed to production. The CI server runs tests and uploads coverage data to UndercoverCI. That's the only required post-install setup step! We scan the PR diff and verify local test coverage for each updated class, method, and block because an absolute percentage check is not enough. Reveal untested methods and blocks, find unused code paths, and improve your test suite. Install UndercoverCI's hosted GitHub App or explore the Ruby gems family. Fully-featured GitHub App code review integration with quick setup for your organization. The UndercoverCI project and related Ruby gems are entirely open-source and free to use locally and in your CI/CD workflows.Starting Price: $49 per month -
2
DeepCover
DeepCover
Deep Cover aims to be the best coverage tool for Ruby code. More accurate line coverage, and branch coverage. It can be used as a drop-in replacement for the built-in Coverage library. It reports a more accurate picture of your code usage. In particular, a line is considered covered if and only if it is entirely executed. Optionally, branch coverage will detect if some branches are never taken. MRI considers every method defined, including methods defined on objects or via define_method, class_eval, etc. For Istanbul output, DeepCover has a different approach and covers all def and all blocks. DeepCover doesn't consider loops to be branches, but it's easy to support them if needed. Even after DeepCover is required and configured, only a very minimal amount of code is actually loaded and coverage is not started. To make it easier to transition for projects already using the builtin Coverage library deep-cover can inject itself into those tools.Starting Price: Free -
3
pytest-cov
Python
This plugin produces coverage reports. Compared to just using coverage run this plugin does some extras. Subprocess support, so you can fork or run stuff in a subprocess and will get covered without any fuss. Xdist support, so you can use all of pytest-xdist’s features and still get coverage. Consistent pytest behavior. All features offered by the coverage package should work, either through pytest-cov’s command line options or through coverage’s config file. Under certain scenarios, a stray .pth file may be left around in site packages. The data file is erased at the beginning of testing to ensure clean data for each test run. If you need to combine the coverage of several test runs you can use the --cov-append option to append this coverage data to coverage data from previous test runs. The data file is left at the end of testing so that it is possible to use normal coverage tools to examine it.Starting Price: Free -
4
V Programming Language
V Programming Language
Simple, fast, safe, and compiled. For developing maintainable software. Simple language for building maintainable programs. You can learn the entire language by going through the documentation over a weekend, and in most cases, there's only one way to do something. This results in simple, readable, and maintainable code. This results in simple, readable, and maintainable code. Despite being simple, V gives a lot of power to the developer and can be used in pretty much every field, including systems programming, webdev, gamedev, GUI, mobile, science, embedded, tooling, etc. V is very similar to Go. If you know Go, you already know 80% of V. Bounds checking, No undefined values, no variable shadowing, immutable variables by default, immutable structs by default, option/result and mandatory error checks, sum types, generics, and immutable function args by default, mutable args have to be marked on call.Starting Price: Free -
5
XCTest
Apple
Create and run unit tests, performance tests, and UI tests for your Xcode project. Use the XCTest framework to write unit tests for your Xcode projects that integrate seamlessly with Xcode's testing workflow. Tests assert that certain conditions are satisfied during code execution, and record test failures (with optional messages) if those conditions aren’t satisfied. Tests can also measure the performance of blocks of code to check for performance regressions and can interact with an application's UI to validate user interaction flows. A test method is a small, self-contained method that tests a specific part of your code. A test case is a group of related test methods. Add test cases and test methods to a test target to confirm that your code performs as expected. The primary class for defining test cases, test methods, and performance tests. An abstract base class for creating, managing, and executing tests.Starting Price: Free -
6
HUnit
Hackage
HUnit is a unit testing framework for Haskell, inspired by the JUnit tool for Java. It's easy to use HUnit, assuming you are familiar with Haskell, though not necessarily with JUnit. A test-centered methodology for software development is most effective when tests are easy to create, change, and execute. The JUnit tool pioneered support for test-first development in Java. HUnit is an adaptation of JUnit to Haskell, a general-purpose, purely functional programming language. With HUnit, as with JUnit, you can easily create tests, name them, group them into suites, and execute them, with the framework checking the results automatically. Test specification in HUnit is even more concise and flexible than in JUnit, thanks to the nature of the Haskell language. HUnit currently includes only a text-based test controller, but the framework is designed for easy extension. Run the tests as a group.Starting Price: Free -
7
Pester
Pester
Pester is the ubiquitous test and mock framework for PowerShell. Adding Pester tests to Powershell code will enhance code quality and allows you to start creating predictable changes. Visual Studio Code comes with full support for Pester allowing you to create tests quickly. Pester integrates nicely with TFS, Azure, Github, Jenkins, and other CI servers, allowing you to fully automate your development lifecycle. Pester provides a framework for writing and running tests. Pester is most commonly used for writing unit and integration tests, but it is not limited to just that. It is also a base for tools that validate whole environments, computer deployments, database configurations, and so on. Pester tests can execute any command or script that is accessible to a Pester test file. This includes functions, Cmdlets, Modules, and scripts. Pester can be run locally, where it integrates well with Visual Studio Code, and it can of course be integrated into a build script in a CI pipeline.Starting Price: Free -
8
Xdebug
Xdebug
Xdebug is an extension for PHP, and provides a range of features to improve the PHP development experience. A way to step through your code in your IDE or editor while the script is executing. An improved var_dump() function, stack traces for notices, warnings, errors, and exceptions to highlight the code path to the error. Writes every function call, with arguments and invocation location to disk. Optionally also includes every variable assignment and return value for each function. Allows you, with the help of visualization tools, to analyze the performance of your PHP application and find bottlenecks. Shows which parts of your code base are executed when running unit tests with PHPUnit. Installing Xdebug with a package manager is often the fastest way. You can substitute the PHP version with the one that matches the PHP version that you are running. You can install Xdebug through PECL on Linux & macOS with Homebrew.Starting Price: Free -
9
OpenCppCoverage
OpenCppCoverage
OpenCppCoverage is an open-source code coverage tool for C++ under Windows. The main usage is for unit testing coverage, but you can also use it to know the executed lines in a program for debugging purposes. Support compiler with a program database file (.pdb). Just run your program with OpenCppCoverage, no need to recompile your application. Exclude a line based on a regular expression. Coverage aggregation, to run several code coverages and merge them into a single report. Requires Microsoft Visual Studio 2008 or higher for all editions including the Express edition. It should also work with the previous version of Visual Studio. You can run the tests with the Test Explorer window.Starting Price: Free -
10
PCOV
PCOV
A self-contained CodeCoverage compatible driver for PHP. When PCOV is left unset, PCOV will attempt to find src, lib or, app in the current working directory, in that order; If none are found the current directory will be used, which may waste resources storing coverage information for the test suite. If PCOV contains test code, it's recommended to set the exclude command to avoid wasting resources. To avoid unnecessary allocation of additional arenas for traces and control flow graphs, PCOV should be set according to the memory required by the test suite. To avoid reallocation of tables, PCOV should be set to a number higher than the number of files that will be loaded during testing, inclusive of test files. interoperability with Xdebug is not possible. At an internal level, the executor function is overridden by PCOV, so any extension or SAPI which does the same will be broken. PCOV is zero cost, code runs at full speed.Starting Price: Free -
11
Azure SignalR Service
Microsoft
With Azure SignalR Service, adding real-time communications to your web application is as simple as provisioning a service—no need to be a real-time communications guru! You don't have to provision and maintain servers just because you need real-time features in your solution. SignalR Service is fully managed which makes it easy to add real-time communication functionality to your application. No more worrying about hosting, scalability, or load balancing – it's all handled automatically. Benefit from everything Azure has to offer! Easily integrate with services such as Azure Functions, Azure App Service, Azure Active Directory, Azure Storage, Azure Analytics, Power BI, IoT, Cognitive Services, Machine Learning, and more. Use the SignalR Service Premium Tier to leverage enterprise capabilities such as auto-scaling, higher SLA, Azure Availability Zone support, and rate limiting. Send advanced metrics to Azure Monitor or integrate with other monitoring solutions.Starting Price: $1.61 per unit per day -
12
Bekonix
Bekonix
Our goal is really to help you create smart, connected projects and products from concept to final design. So that means everything from putting together the hardware components, the firmware, the behaviors and even the end-user mobile app to control it. The Bekonix Platform lets you try out ideas in minutes that would take days or weeks the traditional way. What’s more, since no programming is required, motivated creatives can jump in and not just talk about making a smart, connected product but invent it in real time. Unlike many prototyping tools out there, Bekonix is built for the next level of manufacturing. Real code, real connections. If you need larger volumes to reduce hardware costs, Bekonix can easily migrate with your needs.Starting Price: $79 per month -
13
GameMaker Language (GML)
YoYo Games
The GameMaker Language (also called simply GML) is the proprietary GameMaker scripting language. This language is structured to permit users to create their games in an intuitive and flexible way while offering all the power of any other major programming language. It is also the basis for GML Visual and can be used in conjunction with that if required. Each event has its own tab in the editor and you can add, edit, or remove code from them at any time (for more information on events see Object Events). The code itself must have a basic structure and can contain resource indices, variables, functions, expressions, keywords, etc. all of which are explained in the sections below. If you are a novice to programming or making the switch from GML Visual, it is recommended that you start with the page on basic code structure and then read through all the other pages in this section, testing code from each one within GameMaker itself.Starting Price: Free -
14
AR-media
Inglobe Technologies
With AR-media player, you can visualize and interact with augmented & virtual reality experiences created with the AR-media Studio platform. The App allows you to access public or privately shared content created with AR-media. You can browse through public projects via the AR-media gallery or access private content via the private share feature. You can also download your projects on your device for offline use. Contents can be of different kinds, including interactive blueprints, geolocated or spatial. The app will guide you to visualize and interact with the content. Every project comes with a description and instructions to best visualize it. For example, architectural projects may be associated with project blueprints, specific locations or with any environment; depending on the project, by accessing it on the AR-media Player you will be prompted to scan the project blueprint, get closer to a given location, or scan any area to start experiencing the project content.Starting Price: €8 per month -
15
Auditzy
Auditzy
Auditzy brings you reports in a few clicks, while most page speed tools require detailed setup and supervision. With Auditzy, businesses understand their web page performance, accessibility, and Technical SEO insights across multiple technical parameters to enhance visitor interactivity experience for websites. These checks highlight opportunities to improve the performance of your web app. Auditzy offers a free web page speed test through a simple and user-friendly graphical interface to provide a quality performance report. With Auditzy, gain insights and suggestions about your performance metrics and how to improve them in business terms. Auditzy insights are not just limited to your website. You can also deep dive into competitive analysis and compete in a smarter way with your competitors. Auditzy™ provides comparative analysis across multiple portfolios to understand and overcome your shortcomings.Starting Price: $5 per month -
16
Sleekplan
Sleekplan
Sleekplan is an all-in-one feedback tool that organizes user requests and brings feature voting boards, roadmaps, changelogs, and satisfaction surveys to your website. Launch a single, centralized place to capture, track, and organize internal and external feedback. Define user attributes and create custom segments to make wise product decisions. Make sure that ideas and suggestions are worth pursuing. Collect feedback and discuss possible solutions. Ditch time-consuming emails and facilitate support using interactive thread-based discussions. Keep the feedback coming without interrupting your end-users. Enable them to quickly share feedback from within your web-based app.Starting Price: $15 per month -
17
PixieBrix
PixieBrix
PixieBrix enables organizations to embed overlays and automation into their existing applications to drive productivity, process, and improved workforce experience. The low-code editor enables anyone to customize any web page or web app. Enhancements can be rapidly deployed to entire organizations and updated whenever software or processes change.Starting Price: $10/month/user -
18
Akto
Akto
Akto is an open source API security in CI/CD platform. Key features of Akto include: 1. API Discovery 2. API Security Testing 3. Sensitive Data Exposure 4. API Security Posture Management 5. Authentication and Authorization 6. API Security in DevSecOps Akto helps developers and security teams secure APIs in their CI/CD by continuously discovering and testing APIs for vulnerabilities. Akto's pricing is transparent on website. Free tier is available. You can deploy both self-hosted and in cloud. It takes only few mins to deploy and see results. Akto can integrate with multiple traffic sources - Burpsuite, AWS, postman, GCP, gateways, etc. -
19
Smartmockups
Smartmockups
Give it a try with our samples or upload your own image, and create stunning product mockups easily and online. Create professional mockups right inside your browser, even on the go. Forget about spending hours learning how to use Photoshop. Smartmockups enables you to create stunning high-resolution mockups right inside your browser within one interface across multiple devices. Get the most out of each mockup with advanced features. Upload your own image or video from a computer, use third-party integration or grab a screenshot from the URL. Change the background, and color of the item or crop the whole scene. Our customization options are truly endless. Once your mockup is ready, export the final image in super-high 5K resolution in a few seconds with no limits. Share your mockups on Instagram and get featured. Customize each mockup like a pro. Unlimited export & share, with multiple upload options.Starting Price: $14 per month -
20
Mediamodifier
Mediamodifier
Mediamodifier makes it easier for you to succeed in digital marketing and build a professional presence for your brand with astonishingly easy-to-use online tools. A curated collection of hand-picked mockups carefully selected by our mockup content team. Mediamodifier is the perfect marketing tool for individuals and teams of all sizes. Don't wait until later, start creating professional visuals today. Mediamodifier goes far beyond being just an online graphic design tool. You're joining an evergrowing ecosystem of apps and services which enables the seamless creation of visual marketing assets across all platforms, from social media, to print templates. Start with a design, instantly visualize your idea, share it with your team or clients or automate the process with the API. With weekly new content and constant development based on customer feedback, you're not buying a design tool, but an entire team to support you.Starting Price: $19 per month -
21
Paper
Paper
Paper is a connected design canvas built to help teams collaborate with both humans and AI agents while creating digital products. The platform combines design, code, and data into a single shared workspace that eliminates gaps between design tools and development environments. Paper allows designers and developers to work on a unified canvas built on web standards such as HTML and CSS, ensuring that designs translate directly into usable code. Through integrations with agents, IDEs, and APIs, teams can sync design tokens, styles, and components between their codebase and the canvas in real time. This continuous connection creates a workflow where designs can move seamlessly from concept to code and back again. Paper also supports working with real content and data from databases, CMS platforms, or external tools rather than placeholder text. By unifying design and development workflows, Paper helps teams build products faster while maintaining a single source of truth.Starting Price: $20/user/month -
22
G.V() Gremlin IDE
gdotv Ltd
G.V() is an all-in-one Gremlin IDE to write, debug, test and analyze results for your Gremlin graph database. It offers rich a UI with smart autocomplete, graph visualization, editing and connection management. G.V() automatically detects your connection setting requirements based on the hostname you provide and prompts you for the next required information for an easy onboarding experience, regardless of which Gremlin database you're using. Load, visualize and draw your graph in true “What You See Is What You Get” fashion to build, test, visualize and query your data easily. Learn Gremlin with the embedded documentation and G.V()'s in-memory graph. View your Gremlin query results in various formats allowing to test, navigate and understand your query results rapidly. Compatible with all major Apache TinkerPop enabled Graph Database Providers: Amazon Neptune, Azure Cosmos DB’s Gremlin API, DataStax Enterprise Graph, JanusGraph, ArcadeDB, Aliyun TairForGraph and Gremlin Server. -
23
Tekton
Tekton
Tekton is a cloud-native solution for building CI/CD systems. It consists of Tekton Pipelines, which provides the building blocks, and of supporting components, such as Tekton CLI and Tekton Catalog, that make Tekton a complete ecosystem. Tekton standardizes CI/CD tooling and processes across vendors, languages, and deployment environments. It works well with Jenkins, Jenkins X, Skaffold, Knative, and many other popular CI/CD tools. Tekton abstracts the underlying implementation so that you can choose the build, test, and deploy workflow based on your team’s requirements. Tekton lets you create CI/CD systems quickly, giving you scalable, serverless, cloud native execution out of the box.Starting Price: Free -
24
BotsCrew
BotsCrew
We provide end-to-end chatbot development services, including: - Discovery phase (tech investigation) - Project and Account Management - Conversational Design (Flow) - QA & Testing Services - DevOps Services & Custom development - Chatbot Support & Maintenance - Rapid Chatbot Development (A chatbot in less than 2 weeks) - Chatbots based on GPT-3, ChatGPT development - Chatbot Migration Services - Chatbot Rescue Services - UX & Graphic Design services - Chatbot Persona and Personality creation At every stage of the chatbot journey, our team of Business Analysts, Customer Success Managers, Conversational Designers, Chatbot Developers, QAs will lead you to the best matching solution for your company. Apart from that, we have a Conversational AI platform for our clients. We happen to work with more than 80 amazing clients from all over the world. Our clients include startups that raised 10m now and companies like Samsung NEXT, Mars, Natera, Virgin, BMC.Starting Price: $50 - $99 / hr -
25
Datacake
Datacake
With the Datacake platform, you can realize your Industrial IoT use cases, such as condition monitoring, data logging, real-time dashboards, and data analytics. Connect LoRaWAN or NB-IoT devices and gateways to the platform. Use MQTT or other interfaces. Use the Datacake IoT platform and Ready-to-Use LoRaWAN sensors to detect water levels in flowing or standing water, containers or other vessels. Use modern online maps and display the positions of your IoT assets (e.g. sensors, machines, or other things) in real-time on Interactive Maps. View the routes traveled by these devices in a historical view directly on the map. Upload images and place sensors directly in the floor plan of the building, hall plans, or other diagrams. Show your customers the conditions on-site in a simple way. Send data to your devices on Datacake via webhook. Payload decoders for HTTP requests are also available here.Starting Price: €1 per device per month -
26
Keypup
Keypup
Keypup's Development Intelligence layer puts engineering operations insights at the front. It helps explore, interpret and configure real-time development data into fully customizable insights — reports, charts, cards, KPIs widgets, and dashboards — to enable immediate contextualization, better governance, and higher growth across the organization. Striving to be the global leader in development intelligence, Keypup enables engineering teams and software development stakeholders at all levels to gain a better understanding of their development efforts, thus facilitating the scaling of their technical organizations without compromising quality or efficiency, ultimately leading to faster time to market with sustained growth.Starting Price: $99 per month -
27
DevZero
DevZero
We transport all your devtools into an environment built from production, so it feels like coding directly in prod. Invite your colleagues to pair program with you in the same project. Share copies of your environment for others to use. Share your work with non-engineers. You’re coding in an environment that’s literally built from how production gets built. It’s the closest you can get to safely coding in production. If it’s working in your environment, chances are that it will work in production. Testing doesn’t have to wait till after you send your code out for review, or after you merge the branch. Now you can test end-to-end flows directly in the development stage, within your full-stack environment running all the microservices that are run in production. Optimized inner loop - when actual end-to-end testing can happen before code is even sent up for review, it fundamentally reduces the time-to-deploy.Starting Price: $95 per user per month -
28
Prototyper for Figma
Prototyper
Create powerful prototypes with JavaScript that make your design animated and interactive. Prototyper is easy to get started and becomes more powerful as you go. Prototyper takes your currently selected frame on the Figma canvas and converts each individual layer into an image that renders as a preview on the right-hand side of the plugin. Each layer is turned into a variable that you can reference in the code editor on the left-hand side of the plugin to add animations and interactions. They have a hierarchy and properties defining their position, appearance and interactivity. Animate states or layer properties like scale and color with various easing or spring curves, time and delay options. Events are used to detect and respond to user interactions, animations that start or end, values that change and more.Starting Price: Free -
29
VisualEyes
VisualEyes
VisualEyes simulates eye-tracking studies and preference tests with a 93% accurate predictive technology. Attention maps are the perfect replacement for five seconds tests and eye-tracking studies. The clarity score can also be a great substitute for a quick preference test. Areas of interest quantify attention inside critical elements and enable quick AB tests. Replace time-consuming eye-tracking studies with attention heatmaps and preference testing with our clarity score. VisualEyes makes it easy to generate user insights with the touch of a button. Oh, and all that within your favorite design tools. Building the right digital product is not easy. Increase your KPIs and your developers’ productivity by testing designs before every release. Fewer iterations mean more love from your team and your users. VisualEyes will help you thrive in the attention economy. In the never-ending fight for customers' attention, be sure to use data to stand out from your competitors.Starting Price: Free -
30
Vaadin
Vaadin
Vaadin is a web app development platform for Java. It helps you build reliable web apps with great UX faster than before. Building an enterprise web app involves a lot of moving pieces. Vaadin simplifies the process with an integrated web app development platform for Java backends. Vaadin comes with all the components, frameworks, and tools you need to build a reliable, secure, app with great UX. Research shows that good user experience (UX) increases employee engagement, helps digital transformations to succeed, and avoids costly mistakes. The Vaadin Design System provides UI components and UX patterns that help you build consistently good user experiences in every app. Better yet, you can use it to build a custom design system for your organization. Vaadin comes with 45+ UI components that help you build consistent UIs fast. The theme can be customized to match your brand. Vaadin components work with screen readers and assistive devices.Starting Price: $139 per month
