Best Application Development Software for RudderStack

Your data, your insights—no third-party ownership or black-box analytics. Kubit is the leading Customer Journey Analytics platform for enterprises, enabling self-service insights, rapid decisions, and full transparency—without engineering dependencies or vendor lock-in. Unlike traditional tools, Kubit eliminates data silos, letting teams analyze customer behavior directly from Snowflake, BigQuery, or Databricks—no ETL or forced extraction needed. With built-in funnel, path, retention, and cohort analysis, Kubit empowers product teams with fast, exploratory analytics to detect anomalies, surface trends, and drive engagement—without compromise. Enterprises like Paramount, TelevisaUnivision, and Miro trust Kubit for its agility, reliability, and customer-first approach. Learn more at kubit.ai.

Firebase helps you build and run successful apps. Backed by Google and loved by app development teams - from startups to global enterprises. Products and solutions you can rely on through your app's journey. Install pre-packaged, open-source bundles of code to automate common development tasks. Easily integrate Firebase with your team’s favorite tools. Use Firebase products together to solve complex challenges and optimize your app experience. Personalize your onboarding flow, grow user engagement, or add new functionality with Firebase. Firebase provides detailed documentation and cross-platform SDKs to help you build and ship apps on Android, iOS, the web, C++, and Unity. Learn how to create a Firebase project, register apps to it, and integrate the Firebase SDKs for your products and platform: iOS, Android and Web. Learn about Firebase projects, including concept overviews, deep-dives into topics like project permissions and project management tools, or preparing to launch your app.

Accelerate growth by seeing what’s happening on your website and apps. Kissmetrics is ideally suited for SaaS product and marketing teams because we give you the information you need to acquire qualified prospects, convert more trials into paying customers, and reduce churn. Kissmetrics is also suited for ecommerce product and marketing teams because we give you the information you need to optimize your checkout funnel, convert more visitors into loyalists, and increase the lifetime value of your customers.

Optimizely is the world's leader in Progressive Delivery and Experimentation, empowering leading companies to test and deliver new experiences and features to their customers. Creating digital experiences that transform your company takes data-driven decisions, continued experimentation and constant invention. Optimizely One helps you unlock your digital potential. To create helpful, human digital experiences requires constant invention from every company.​ A digital experience platform (DXP) should make creating behavior-driven experiences simple, crafting sophisticated content faster, collaborating easier and anticipating customer needs possible. See how you can eliminate guesswork and make every interaction actionable. Commerce in the digital age is more than transactions, products and catalogs. Selling online means telling stories, evoking emotion and establishing trust. No one owes you their business, you have to earn it with every interaction.

Heap is a comprehensive digital insights platform that provides businesses with a complete understanding of their customers’ journeys. By automatically capturing all user interactions across web and mobile platforms, Heap offers actionable insights to optimize conversion, retention, and user experience. The platform uses advanced data science to identify moments of friction and opportunity, allowing businesses to make data-driven decisions quickly. With powerful tools like session replay, heatmaps, and AI-powered insights, Heap enables businesses to understand and improve user behavior at every touchpoint.

Apache Kafka® is an open-source, distributed streaming platform. Scale production clusters up to a thousand brokers, trillions of messages per day, petabytes of data, hundreds of thousands of partitions. Elastically expand and contract storage and processing. Stretch clusters efficiently over availability zones or connect separate clusters across geographic regions. Process streams of events with joins, aggregations, filters, transformations, and more, using event-time and exactly-once processing. Kafka’s out-of-the-box Connect interface integrates with hundreds of event sources and event sinks including Postgres, JMS, Elasticsearch, AWS S3, and more. Read, write, and process streams of events in a vast array of programming languages.

Behavior-Based Customer Messaging. Perfect for Your SaaS. Onboard and engage your SaaS users with targeted behavior-based campaigns. Choose the right channel — email or in-app messages — to deliver the right information when your users need it the most. Onboard your users with automated behavior-based campaigns. Deliver the right information at the right time. Trigger automated email campaigns based on what users do (or don’t do) in your product. Choose the right channel for each message: deliver via email or in-app messages. Segment your users based on their behavior. Send one-off broadcasts to make announcements and promote new features. Use built-in campaign templates, so that you never have to start from scratch. View your user profiles in a simple admin dashboard. Add filters or dive straight into user profiles one by one, where you can see all their events and properties.

Turn your product into a growth engine. Deliver the frictionless, product-led experiences your users demand. Grow your business faster with Appcues. Better user experiences lead to faster and more profitable growth. That’s why we developed the Product-Led Growth Platform. Appcues makes it easy to deliver exceptional user experiences at scale and unify your organization around the product as its greatest lever for growth. From initial evaluation to advocacy, Appcues helps companies deliver product experiences that create happier customers and scalable business growth. Wow users with personalized onboarding experiences. Make a great first impression. Onboard and activate users by delighting, educating, and guiding them to value quickly. Improve feature engagement and adoption rates by creating timely, contextual prompts and walkthroughs.

GrowthBook is an open source feature-flagging and experimentation platform built to help teams release code confidently and measure the impact of product changes using their own data. It enables the creation and management of feature flags of various types (Boolean, number, string, JSON) with targeting rules, percentage roll-outs, safe ramp-ups, and experiment assignment. The platform is warehouse-native, allowing you to connect your data where it already lives (SQL data warehouses, Mixpanel, Google Analytics, and more) and run experiments and analyses without sending raw user-level PII to a third-party service. It supports modular usage; you can adopt just feature flagging, just experiment analysis, or both together. Key capabilities include: high-performance lightweight SDKs (enabling billions of feature lookups per day), a visual editor for no-code AB tests, and experiment reporting with advanced statistical methods.

Centralize all marketing activities with Adjust, a mobile measurement company. Adjust allows users to track all of their marketing channels and aggregate their conversion data for in-depth analysis. Adjust features real-time protection against mobile ad fraud. Adjust only offers users clean marketing attribution data for accurate analysis. Adjust enables users to gather valuable mobile marketing data points with one simple interface.

Always Be Testing. Always Be Converting. Easily create and run tests to increase revenue, combat cart abandonment, and build stellar digital experiences that convert, without coding or involving IT. Build your experiences, exactly the way you want, without writing a single line of code. For more than a decade, 1000s of growth leaders and CRO Experts have trusted VWO Editor to create and test experiences across millions of users, without ever involving a developer. Easily change the headline, CTA, images, or any other element on your page. Modify existing pages or create multiple variations of the same page. Make styling changes such as background color, font styles, and borders as well. Drag, move, resize, and hide options let you make layout changes like bringing a form or an offer to top of the fold. Unlimited undoes to fix your mistakes. Get an entire library of widgets to test with.

Google Cloud Pub/Sub. Scalable, in-order message delivery with pull and push modes. Auto-scaling and auto-provisioning with support from zero to hundreds of GB/second. Independent quota and billing for publishers and subscribers. Global message routing to simplify multi-region systems. High availability made simple. Synchronous, cross-zone message replication and per-message receipt tracking ensure reliable delivery at any scale. No planning, auto-everything. Auto-scaling and auto-provisioning with no partitions eliminate planning and ensures workloads are production-ready from day one. Advanced features, built in. Filtering, dead-letter delivery, and exponential backoff without sacrificing scale help simplify your applications. A fast, reliable way to land small records at any volume, an entry point for real-time and batch pipelines feeding BigQuery, data lakes and operational databases. Use it with ETL/ELT pipelines in Dataflow.

AppsFlyer helps brands make good choices for their business and their customers through innovative, privacy-preserving measurement, analytics, fraud protection, and engagement technologies. Built on the idea that brands can increase customer privacy while providing exceptional experiences, AppsFlyer empowers thousands of creators and 10,000+ technology partners to create better, more meaningful customer relationships.

For app-first companies, Leanplum is the only solution that helps personalize and optimize all customer touch points, both inside and outside the app. As the only company that focuses on engagement, personalization and optimization for gaming, subscription, on-demand & mobility apps, and mobile retail & finance we know app industry workflows and use cases inside and out. The only solution that combines Lifecycle Marketing & LiveOps promotions with the ability to control the live events & sales via Remote Configuration, built on a powerful foundation of realtime data & A/B testing. The only solution that combines Lifecycle Marketing with the ability to personalize and optimize the Product Experience, built on a powerful foundation of realtime data and A/B testing. Activate users with personalized multi-channel engagement in realtime. Grow a loyal user base by providing relevant content based on behavioral data and triggering.

Make better customer experiences. Our A/B testing, full-stack, and personalization platform gives marketers, product teams, and developers the power to boost engagement and conversion. Intuitive A/B testing and personalization features for every type of team. One platform for all your A/B testing, full-stack, and personalization needs. HIPAA, CCPA, and GDPR capabilities enable teams to leverage data securely. Test copy, design, or entire pages for all channels and devices without impacting performance. Unlimited variations. Developers welcome, but not required. Roll out new features with confidence. Instantly update your mobile apps. Run experiments in real-time everywhere in your tech stack. Provide every visitor with an individualized experience. Harness AI to serve relevant messaging and products to every customer based on Kameleoon Conversion Score (KCS™).

With Cloud Search, we’re bringing the best of Google Search to your business and delivering true enterprise search. Whether integrated with G Suite or used as stand-alone to connect to all your third-party applications and data platforms, Cloud Search helps your employees quickly, easily, and securely find information across the business. Searching through your company’s data should be easier. Cloud Search utilizes machine learning to bring instant query suggestions and surface the most relevant results across more than 100 different content platforms — in over 100 different languages. What Google does for the web, Cloud Search does for enterprise search and for your business. Cloud Search delivers enterprise search through robust SDKs and ready-to-use APIs to help you scalably index vast amounts of data from any source. With 100+ connectors, you can index your third-party content from dozens of enterprise sources.

Amazon EventBridge is a serverless event bus that makes it easy to connect applications together using data from your own applications, integrated Software-as-a-Service (SaaS) applications, and AWS services. EventBridge delivers a stream of real-time data from event sources, such as Zendesk, Datadog, or Pagerduty, and routes that data to targets like AWS Lambda. You can set up routing rules to determine where to send your data to build application architectures that react in real time to all of your data sources. EventBridge makes it easy to build event-driven applications because it takes care of event ingestion and delivery, security, authorization, and error handling for you. As your applications become more interconnected through events, you need to spend more effort to find events and understand their structure in order to write code to react to those events.

Archetype is the pricing, billing, and metering stack you won't have to build. Create any pricing model and charge on usage, seats, and more with infinitely flexible pricing and automated invoicing. Automate operations, financial invoicing, and collection workflows. Save your engineering teams thousands of hours by building an in-house billing, metering, and invoicing stack. Archetype powers SaaS pricing, freeing your team to focus on product and saving your engineering and teams thousands of hours. Charge for total or peak usage. Offer free trials. Flexible pricing models scale with your needs. Seats, minutes, API calls, define your unit, log events, and start collecting. Monitor revenue, usage, and churn to address spikes and identify trends. Run real-time pricing experiments. Track conversion, usage, and churn to optimize your pricing. Let your users set usage thresholds. Alert your sales and support to resolve issues or upsell.

Pendo is a product experience platform that helps software product teams deliver products users love. With Pendo, product teams can answer questions like which features are customers using? Which features are they ignoring? Which ones are driving delight and which are causing pain and confusion? From these same insights, you can easily set up in-app messages, guides and walkthroughs without any coding to help users get the most value from your products. By quickly identifying the specific features and workflows that cause users pleasure and pain, you can use the Pendo platform to guide users through the rough spots and drive them to adopt the features that create raving fans.