
Retool is a modern AI-native application development platform designed to help teams build internal software quickly and efficiently. It enables users to create agents, workflows, dashboards, and full-stack apps using natural language prompts and visual tools. Retool connects directly to databases, APIs, vector stores, and AI models to ensure applications work seamlessly with existing systems. The platform allows teams to transform raw data into actionable tools such as dashboards, admin panels, and monitoring systems. With drag-and-drop UI building, code-level customization, and AI-assisted generation, Retool supports multiple development styles. Built-in workflows automate complex processes while maintaining auditability and security. Retool fits naturally into standard engineering stacks with support for CI/CD and version control. Enterprise-grade permissions and hosting options ensure sensitive data stays protected. Used by thousands of companies worldwide, Retool helps teams ship AI-powered software faster. It bridges the gap between idea and production with speed and control.
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Engineering teams shipping with AI have a new bottleneck: validation. Code output has accelerated. Quality hasn't. Checksum closes the gap.
Checksum is a continuous quality platform with a suite of AI agents that handle testing end-to-end, at every stage of the development lifecycle. Where most tools wait for a human to trigger them, Checksum runs autonomously in the background, generating tests, executing them, and repairing failures without manual intervention. Seventy percent of test failures are resolved automatically through real-time auto-recovery.
The platform covers every layer: end-to-end UI flows via Playwright, API endpoint chains, and targeted CI tests scoped to exactly what changed in a PR. All tests land as real code in your repository and are delivered as standard Playwright, owned by your team.
Checksum is fine-tuned on 1.5+ million test runs and integrates natively with Cursor, Claude Code, and 100+ AI coding agents. Type /checksum and your coding agent's output gets tested before it ever reaches review. Generation and healing happen on Checksum's cloud infrastructure which means no LLM tokens consumed, no local resources required.
The result: test suites that stay green as the product evolves, fewer regressions reaching production, and release confidence that scales alongside AI output.
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Useberry
Useberry stands out as a robust UX research platform designed to help product teams enhance their digital offerings with greater efficiency. It encompasses a range of research techniques, such as prototype assessments and website usability evaluations, while also granting access to a diverse participant pool that boasts over 100 targeting characteristics across 34 different countries. The platform's seamless integration with widely-used prototyping and design tools empowers users to assign tasks, confirm their assumptions, and move forward with assurance. With its advanced features like click tracking, user flow analysis, and session recordings, Useberry delivers valuable insights by capturing user interactions, which include mouse movements, facial expressions, vocal responses, and overall screen activity. Additionally, it accommodates multiple testing methodologies, such as single task assessments, open analytics, first click tests, five-second tests, online surveys, card sorting, tree testing, preference testing, and randomization, making it a versatile choice for UX research. Overall, Useberry equips teams with the necessary tools to refine their products based on reliable user feedback and data-driven insights.
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Lyssna
Lyssna, formerly UsabilityHub, is a remote user research platform that allows you to deeply understand your audience and move in the right direction — fast.
With Lyssna, you can set up unmoderated and moderated research studies, recruit participants, and gain insights quickly to inform decision-making from strategy and concept through to design and implementation. The result? Experiences that your users will love.
Key features include:
Five second testing: Quickly evaluate landing page effectiveness with brief user exposure.
First click testing: Assess navigation efficiency by tracking user clicks.
Surveys: Gather feedback from target customers for validation.
Navigation testing: Optimize user flows through task completion assessments.
Prototype testing with Figma: See how users navigate interactive Figma prototypes at every stage of the design process.
Card sorting: Open and closed methods to organize and label content intuitively for your audience.
Tree test: Refines I.A for user navigation, ensuring easy access to needed information.
Preference testing: Understands audience preferences through choice-based questions.
Participant recruitment: Enables testing with own users or via a panel with over 690,000 people across 120+ countries and with 35+ demographics.
Interviews: Streamlines the entire interview process, from planning to transcription.
Recordings: Capture your participants' audio, screen, and/or camera during unmoderated testing.
Live website testing: Discover exactly where and why users struggle as they complete key tasks on live websites
Spaces and Wallets: Organize research by team or project while managing budget allocation in one place.
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