Best Free Application Development Software - Page 61
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Compare the Top Free Application Development Software as of November 2026 - Page 61
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1
VibeView
ScriptX
VibeView – Browser-based iOS, Android, Apple TV and Android TV cloud simulators with agentic live connection capabilities, AI-powered mobile app testing, an embeddable device SDK, and instant shareable app previews. The tools lets developers, QA teams and product managers run mobile apps in the browser without a Mac, Xcode, Android Studio or physical devices. Upload an iOS or Android build and stream a live simulator in seconds, then share a link so teammates, clients, beta testers or sales prospects can interact with the app instantly – no install, no TestFlight, no provisioning profiles. VibeView can also be used as a development tool, not just a testing one. Run vibeview dev and your React Native app streams to a browser simulator with full hot reload – edit code locally, see it live in seconds, without a Mac, Xcode, Android Studio or a physical device.Starting Price: $19/month -
2
Rune IDE
Rune IDE
Rune is a fast, keyboard-driven IDE for power users that brings code, terminals, CLI tools, language intelligence, debugging, and AI agents into one composable, multi-workspace environment. Built around the Unix way, it keeps powerful development tools close together without forcing developers into a mouse-heavy workflow. Rune ships with three built-in editing modes, a standard editor for users coming from VS Code, Cursor, or Sublime; modal editing for Vim and Neovim users; and an Emacs-style editor, with keybindings applied throughout the interface. Workspaces combine files, terminals, tasks, debugging, search, and language intelligence, and can run locally or on remote machines. Rune Agent lives in the same workspace as the code, where it can read and edit files, search the codebase, run commands, use tools, and maintain full conversations. It supports OpenAI, Codex, Anthropic, Claude, Gemini, Amazon Bedrock, local models, and custom OpenAI-compatible endpoints.Starting Price: $10 per month -
3
CybeDefend
CybeDefend
Your AI agent ships thousands of lines a day, and most of them never get a real review. CybeDefend works inside the agent while it codes. One command installs VibeDefend on Claude Code, Cursor, Windsurf, GitHub Copilot, Codex and other agents. From then on the agent writes with your business rules in its context, mined automatically from your repo (tenant scoping, soft delete, audit on write), next to your security rules (OWASP, SOC 2, GDPR, ISO 27001). It scans each diff while the file is still open, and a guard refuses commands like rm -rf, sudo or a read of your secrets before they run. Behind it sits a full AppSec platform with SAST, SCA, secrets, IaC, CI/CD and container scanning, plus AutoFix. The free plan needs no card and includes 10 static scans and 50 AI credits. Paid plans start at $19 a month. npx -y @cybedefend/vibedefend@latest installStarting Price: $19/month -
4
agent-browser
Vercel Labs
agent-browser is a browser automation CLI designed specifically for AI agents, with compact text output that minimizes context usage and a 100% native Rust architecture. Its agent-first approach uses concise output instead of verbose JSON, helping reduce token consumption during browser automation. The snapshot command returns an accessibility tree where every interactive element receives a unique reference, allowing agents to select elements deterministically without repeatedly querying the DOM. More than 50 commands cover navigation, forms, screenshots, network activity, storage, files, tabs, frames, and debugging. Built-in observability features include video recording, streaming, debugging, profiling, and page diffing, while dedicated workflows support modern applications through network control, React and Web Vitals analysis, init scripts, and Next.js and Vercel integrations.Starting Price: Free -
5
KnoxCall
KnoxCall
Every app, build pipeline and AI agent that calls Stripe, OpenAI or another third-party API needs its key, so copies of live keys pile up in .env files, CI settings, laptops and agent environments. Each copy can leak through a poisoned package, a prompt-injected agent or a compromised build, and a stolen key keeps working until it is replaced everywhere. KnoxCall keeps the real key in one place and adds it to each call on its way out. Your apps, pipelines and agents hold only a KnoxCall token. If one leaks, one click revokes it everywhere, without rotating the provider key. Every call is logged with the app or agent that made it. AI agents get spend limits, prompt checks, and redaction of the personal data KnoxCall detects. CI can use workload identity instead of a stored secret, and Enterprise adds a master key held in your own cloud account, SSO and SCIM. SDKs for Node, Python, Go, PHP, Ruby, React and the browser. Free plan, no card; paid plans from $19 a month.Starting Price: $0 -
6
Siteprint
Siteprint
Siteprint is a Safari extension for Mac that turns the design of any website into a measured prompt your AI coding agent can use to build something new. Instead of relying on screenshots or vague visual descriptions, it inspects the page and captures concrete design values such as colors, type scale, spacing, corner radii, layout, and overall structure. Users can scan a site they like, export the results as design tokens or a DESIGN.md file, and pass that information directly to tools such as Claude Code, Codex, Cursor, Lovable, or any other AI. Siteprint can also mix two sites into one design direction, combining elements such as one site’s colors with another site’s typography or layout. A built-in library keeps scans available for reuse, while grid overlays and an eyedropper help with direct visual inspection. With a local MCP server, supported coding agents can read saved scans directly and use them as design context while generating new pages.Starting Price: $9.99 per month -
7
Vitest
Vitest
Vitest is a next-generation testing framework powered by Vite, designed to make testing fast, lightweight, and closely integrated with modern JavaScript development. Because it builds on Vite, Vitest understands existing Vite configuration and can reuse the same resolve and transform pipelines used by an application during development and builds. It can also be used without Vite and works for backend code as well. Vitest provides a Jest-compatible API, including expect assertions, snapshots, mocking, and coverage, making migration from Jest straightforward for many projects. Its smart watch mode reruns only tests related to changed files, using an experience similar to Vite’s instant Hot Module Replacement. Vitest supports ESM, TypeScript, and JSX out of the box, reducing the need for separate transformation configuration.Starting Price: Free -
8
Uptime Tracker
Uptime Tracker
Uptime Tracker monitors websites, APIs, servers and scheduled jobs around the clock, rechecking failures before sending alerts to help distinguish outages from brief network errors. It supports HTTP(S) and keyword checks, SSL certificates, TCP ports, DNS records, ping, domain expiry, authenticated API tests with JSON assertions, multi-step API workflows, gRPC, SMTP, IMAP and heartbeat monitoring for cron jobs and backups. Alerts can be routed through rules to email, SMS, Slack, Microsoft Teams, Discord, Telegram, Google Chat, PagerDuty, Pushover, ntfy, Gotify, Mattermost, Rocket.Chat and webhooks, with on-call schedules and escalation. The service includes incident timelines, maintenance windows, reports and hosted status pages on custom domains. Individuals, developers, SaaS teams, agencies, freelancers, online stores and small businesses can use it to monitor services and communicate availability. A free plan includes two monitors; paid plans start at $9 per month.Starting Price: $9/month -
9
ScanMyApp
AI Innovate Solutions Ltd
ScanMyApp is a web-based security audit service for founders and developers building apps with Next.js, Laravel, Python, Supabase, and Firebase. Its free passive scan checks a public app URL for exposed files or secrets, HTTPS certificate issues, and missing security headers. Paid code audits inspect source repositories for exposed credentials, vulnerable dependencies, weak database access rules, and API routes with authentication or authorization gaps. Findings include a security score, severity ranking, plain-language explanations, file and line references, and suggested remediation prompts. Users can connect a repository with read-only GitHub access or upload a ZIP archive. Code is not executed and is deleted after analysis. Human-reviewed plans add engineer-verified findings and recommendations; full audits include a senior security engineer and video walkthrough. ScanMyApp serves startup founders, small businesses, and developers evaluating AI-built or conventional web apps.Starting Price: $99 one-time -
10
qodesign
Wisdom Sphere
qodesign is a catalog of animated interface components that developers can add to web applications. Its components cover interface patterns such as login and one-time-password screens, navigation bars, carts, checkout flows, dashboards, and small interaction effects. Each paid download includes React and TypeScript source styled with Tailwind CSS and animated with Framer Motion, plus an HTML version and a PROMPT.md with guidance for adapting the component or rebuilding it in another stack with an AI coding assistant. Components can be previewed live in the browser, copied into a Next.js or other React project, or used as HTML. The catalog offers individual components and one-time collection purchases, along with a free component and a separate MIT-licensed free collection on GitHub. It is intended for front-end developers and independent builders creating personal or client web projects.Starting Price: $3/component -
11
KERNEL
Kernel
KERNEL is a cloud browser infrastructure platform for developers building AI agents and browser-based automation. It provides managed browser sessions that agents can use to navigate websites, interact with page content, and perform tasks through code rather than relying on a local browser setup. The service is designed for production workloads, with persistent browser profiles, live browser viewing, session recording and replay, and controls for managing browser access. Teams can connect agent workflows through KERNEL's APIs, SDKs, and hosted MCP server, and use the platform for web research, data gathering, and other tasks that require interacting with websites. Plans for individual developers, startups, and enterprise teams include different browser concurrency, usage credits, and access to capabilities such as managed authentication, stealth mode, and regional browsers.Starting Price: $0/month -
12
Sync Engine for Intercom
RippleStep
Sync Engine for Intercom is a WordPress plugin that keeps Intercom contacts up to date with WordPress user data. Connect through OAuth or an Intercom access token, then sync new and updated users, including email, name, phone, and avatar. WordPress roles map to Intercom tags, which update when a user's role changes. Sync runs in the background on the customer's WordPress site; the plugin is not a chat widget, and Intercom Messenger is optional. The free plan includes basic user sync, role tags, four events (User Registered, Login, Logout, and Profile Updated), and email support. Pro costs $99 per year and adds WooCommerce events, attribute mapping, bulk sync, and priority support; WooCommerce features are Pro-only. The free plan costs $0 forever.Starting Price: $0 -
13
BugTape
BugTape
BugTape is a hosted error-monitoring and debugging platform for web applications. It collects user-submitted reports, uncaught browser errors, failed or stalled requests, and server-side exceptions, then groups related events into issues. Issues can include DOM-based browser replay (not video), network activity, console output, stack traces, and release context to help developers reproduce failures. Node.js and Python SDKs capture server errors. A Swift package in alpha captures handled errors on iOS and macOS. Teams can triage issues in BugTape or connect an MCP-compatible coding agent to retrieve ranked issues, inspect a reproduction bundle, and report work status with a pull-request reference. When a resolved issue reappears in a later release, BugTape can reopen it as a regression. The service helps development teams investigate problems in web apps and APIs.Starting Price: $0 -
14
BetaLobby
BetaLobby
BetaLobby is a free closed-testing coordination platform for independent Android developers preparing apps for Google Play production access. It helps developers find reciprocal testers by grouping 16 developers into teams; each member installs the other 15 apps, giving each app 15 testers. Developers add BetaLobby's shared Google Group to an app's closed-testing track, then install and use fellow members' apps during the test period. The Android app verifies installations and supports daily check-ins without screenshots. Members who miss installs or check-ins lose TRUST and cannot join teams. The website provides testing guidance and a production-access questionnaire tool. BetaLobby serves indie developers and small app teams that need structured mutual testing before publishing Android apps. The core service and tools are free, and the Android app is available on Google Play.Starting Price: Free -
15
VibeUI
VibeUI
VibeUI is a browser-based catalog and installation service for React components, page sections, and animations for website projects. Users can browse and preview items, adjust available settings, then use “Copy for AI” to give a coding agent an instruction and a shadcn-compatible CLI command for adding an item to a project. The library includes controls, navigation, hero and pricing sections, FAQs, data grids, page layouts, industry examples, and animated effects. Components install as individual files and generally use React and Tailwind CSS, with requirements specified for each item. The service is aimed at developers and website builders using AI coding agents such as Cursor and Claude Code. A free account allows up to 20 different component copies per month; the PRO plan has an unlimited copy allowance and includes selected restricted blocks, scenarios, and animations.Starting Price: $9/month -
16
Gummble
Gummble
Gummble is a UI design reference library with more than 300,000 real app screenshots, 21,000+ user flows, and design patterns from 1,500+ shipped iOS, Android, and web products. Designers, UX researchers, developers, and product teams can search by pattern, such as onboarding, paywalls, empty states, and settings; by UI copy; or by complete flows. Each screen includes design analysis, and users can save references to collections. Its MCP server lets compatible AI assistants and coding tools, including Claude, Cursor, and Codex, search the library to ground interface design and implementation in real product examples. The free plan offers limited browsing; Browse adds unlimited screens, flows, downloads, collections, and MCP access, while Pro adds Figma export.Starting Price: $9.99/month -
17
Charming
Charming
Charming is a hosted workspace for small apps created with AI assistants such as Claude and ChatGPT. It gives each app a stable web link, persistent data storage, and controls for inviting people to view, use, or edit it. Apps can be opened in a browser or used within supported AI clients, so people can build and update a tool through conversation and then share it without setting up a separate database or hosting stack. Common uses include personal trackers, classroom tools, shared team workflows, client-facing utilities, and other lightweight applications. Charming also provides scheduled routines, webhooks, service connections, saved versions, custom domains on paid plans, and APIs for agent-driven development. Individuals can use the free plan, while Pro and team plans add expanded limits, domains, shared team spaces, and administrative controls.Starting Price: $8/month -
18
Audience Analysis
MB Skydis
Meet your audience before you build—AI persona panels for product and pricing research. Audience Analysis helps indie founders and SaaS teams explore product ideas, pricing, and objections with fictional AI panels. Users describe a market and create a persona panel with distinct goals, needs, and concerns. Add product links or images for context, question the full panel or individual personas, compare responses, review themes and sentiment, and follow up on contrasting views. Free accounts include 750 one-time credits and public panels of up to 10 personas; paid plans offer monthly credits, larger panels, private audiences on eligible tiers, and API access on Growth and above. These exploratory simulations help sharpen hypotheses, not produce representative research or replace real customer interviews. Validate findings with customers, experiments, and observed behavior.Starting Price: $0 -
19
Twinbay
Twinbay
Twinbay is a hosted API simulation platform for developers testing AI agents and applications that call third-party services. Its stateful API twins can return configurable responses and model conditions such as payment declines, rate limits, expired credentials, email bounces, and paginated results. Teams direct compatible SDK requests to a twin, create isolated environments for test runs, inspect request logs, and use the environments in development or CI. The catalog includes twins for services such as GitHub, HubSpot, Plaid, Resend, Klaviyo, Linear, NetSuite, and QuickBooks. Twinbay offers a free plan with limits on twin usage and environment duration, pay-as-you-go twin-hour billing, and an Enterprise option. It is designed for engineers who need repeatable tests of agent behavior without relying on live production accounts or shared provider sandboxes.Starting Price: $1/twin-hour -
20
Clearcote
Clearcote Labs
Clearcote is a Chromium-based anti-detect browser with fingerprint controls built into the browser engine. It manages canvas, WebGL, audio, fonts, hardware, locale, timezone, WebRTC, TLS and HTTP/2 signals, and supports seeded, persistent browser identities and proxy-based geo matching. Developers can use its Python, Node.js and .NET SDKs with Playwright, Puppeteer and other Chrome DevTools Protocol clients, or run browser sessions through Docker, a local Profile Manager, a standing CDP endpoint, an MCP server or a hosted browser service. The product is designed for privacy-focused browser automation, web testing, research and other lawful tasks. Clearcote provides an open-source build and licensed builds, plus hosted sessions billed by traffic. The Profile Manager lets users create, save, organize and launch browser profiles with cookies and site storage persisting between sessions.Starting Price: $15/month -
21
Limrun
Limrun
Limrun provides cloud-based development environments for building, running, and testing mobile applications with Apple and Android simulators. Developers and coding agents can access remote macOS and iOS tooling, Android emulators, and persistent workspaces without maintaining local simulator infrastructure. The service supports interactive development as well as automated workflows, including build and test execution with mobile testing frameworks. Teams can connect through Limrun's command-line tools and Model Context Protocol (MCP) server, letting compatible coding agents control simulators, inspect app behavior, and iterate on builds. Limrun is intended for mobile engineers and teams developing or testing iOS and Android apps, and for agent-driven workflows that need access to real development tools and device simulation in the cloud.Starting Price: $20/month -
22
MaxBlox
CellarStone
MaxBlox is a web-based application development platform that allows users to create their own applications with no coding needed. With MaxBlox, users can make the needed reports, tables and forms, using screens with easy drop-down options to choose from. This gives users the benefits of app development acceleration and lesser operational costs and effort.Starting Price: $9.00 -
23
Usetrace
Usetrace
Usetrace is a software testing automation platform that provides performance monitoring, load testing, and regression testing for small and mid-sized businesses. This code-free editor is used by web product development teams to build robust test cases across multiple browsers. Usetrace also enables production teams to seamlessly monitor critical business processes and ensures the effective functioning of a web app or website with its on-demand testing features. Additional features provided by Usetrace include test reporting, project management and collaboration, responsive testing, traces editor, and synchronization and waiting.Starting Price: $49 per month -
24
Orcanos
Orcanos
Orcanos is a medical device quality and development platform that unifies eQMS, ALM, design control, document control, and risk management in one system. It helps MedTech teams connect R&D and Quality workflows so requirements, risks, validations, documents, and audit evidence stay traceable. The platform supports compliance needs such as ISO 13485, EU MDR, ISO 14971, FDA requirements, and 21 CFR Part 11. Orcanos includes customizable workflows, electronic signatures, document lifecycle automation, training tasks, audit trails, access controls, and centralized quality records. Its integrated ALM tools help teams manage design inputs, verification, validation, DHF readiness, impact analysis, and product development changes. With AI assistance, rapid deployment, and one source of truth for regulated product data, Orcanos helps medical device companies reduce compliance friction and accelerate innovation. -
25
Fanout Cloud
Fastly
Use our global network and cloud tools to power your real-time API. You build the endpoints, we’ll make them glow. Keep your existing web stack and let the Fanout Cloud manage persistent client connections. All you have to do is notify us when there is data to send. Scalable — push to a thousand clients or to a million; Fanout's network can handle it. You've got your hands full scaling every other aspect of your application. Let us take this one. Invisible — Use custom domains and data formats or migrate an existing real-time API to the cloud without breaking any of your clients. You own your API. Rest easy with our business-grade SLA, included in all paid accounts. All accounts, including the hacker tier, benefit from SSL by default. A big spike in traffic should be a good thing – not ruin your month. Usage-based pricing without hard limits. We charge by messages and connected client time (not concurrent connections) so you can accurately predict your costs.Starting Price: $25 per month -
26
Instabug
Instabug
Instabug provides in-app feedback and bug reporting to mobile apps. After integrating the SDK, it allows you to have seamless two-way communication with users or testers while providing detailed environment report for developers. The integration process takes less than a minute and the results are outstanding! The top apps in the world rely on Instabug. We provide exceptional support 24/7 and is constantly rated highly as a bug reporting & tracking tool. Expand your mobile team's understanding of performance and user experience to enable faster fix times, precise performance metrics and error prioritization. With visibility into 100% of user sessions, quickly prioritize to focus on the issues that matter most to you and your user’s experience. Quickly integrate instabug to your apps with a single line of code. Instabug enables your team to find the balance between new feature development and stability.Starting Price: $83.00/month -
27
MongoLime
MongoLime
MongoLime allows you to easily manage and precisely control your MongoDB connections. Viewing and managing documents. Statistics, Indexes and other operations. Create and modify documents with a convenient MongoLime editor. Use raw JSON editor for complex documents. Search for documents using query builder. Save searches for a quick access. Export Databases and Collections in a JSON format as a ZIP archive. MongoLime is an application created to work with MongoDB databases on mobile devices and tablets running Android. The application’s interfaces are designed for easy data collection management. The application allows you to connect to MongoDB databases directly or in the Replica Set mode.Starting Price: $16 one-time payment -
28
P4
Perforce
P4 (formerly Helix Core) is an enterprise-grade version control system designed to manage the complexities of modern software development. It allows teams to store, track, and manage all digital assets—ranging from source code to 3D models—with unprecedented scalability. P4 is ideal for large, distributed teams working on large-scale projects, offering powerful collaboration tools, seamless integrations, and advanced branching capabilities. With strong support for both centralized and distributed workflows, P4 enhances productivity and efficiency, making it a top choice for software, game, and hardware development teams. -
29
Testnetic
Testnetic
Create a testing environment that supports your journey from a minimum viable product to a full testing and development team. From day one create an environment of continuous testing that leads to faster development and better quality code. Reuse test cases and integrate in evolving test runs. Regardless of your level of expertise, Testnetic is ready to give you a hand. We’ll provide some training and even help you write a few test cases and test runs to start your customer satisfaction journey. Streamline test case management, bug and task tracking. One beautifully designed collaborative space. Make testing an asset; replace multiple tools, get teams working better, get to market faster, create happier customers and save money. Create Test Runs for different testing scenarios such as environment. Consolidate Test Cases in multiple logical functional groups.Starting Price: $9 per month -
30
AttackFlow
AttackFlow
Enterprise Edition is a web application with repository integrations and many more enterprise features contributing to application security. Extensions are IDE extensions with real-time document scan on development. AttackFlow provides no-need to compile, just-in-time, flow-sensitive and precise static source code scanning solutions which find security vulnerabilities in your code. Attackflow Enterprise Edition is a web application that is located as on-premise in companies to secure their script-sized applications to enterprise-level applications. Enterprise Edition makes Static Application Security Testing (SAST) more adoptable with DEVOPS with its various tools like CLI and Devops/Jenkins extensions. It secures applications at every DEVOPS stage. A key requirement in transitioning to a successful DevOps posture is security. In this growing DEVOPS world Attackflow creates value for much more secure applications.
