All AI tools

Every tool in the directory (5,694). Filter by category and price, or search by what you want to do.

All categories Chat assistants Coding Writing Image Video Audio & voice Design Productivity Research & search Agents & automation Marketing Sales Data & analytics Customer support Education Legal, finance & HR Models & APIs

Any price Free Freemium Free trial Paid

More filters

28 tools for “Experimentation”

Amplitude
Product analytics platform with AI agents for insights
FreemiumData & analytics2 views6 clicks to the websiteMade in United States
Visit
Google AI Studio
Free playground and API keys for Google's Gemini and Gemma models
FreemiumModels & APIsMade in United States
Visit
Hubble
AI-moderated interviews and usability tests for user research
FreemiumResearch & search
Visit
Giskard
Red teaming, evaluation and guardrails for LLM agents
FreemiumModels & APIsMade in France
Visit
Dreamspace
Infinite canvas for running, comparing and chaining prompts
FreemiumModels & APIs
Visit
PerceptionNew
Color palette generator built on color psychology research
Freemium · $14/moDesign
Visit
Weights & Biases
Experiment tracking and LLM observability, now part of CoreWeave
Freemium · $60/moModels & APIsMade in United States
Visit
Braintrust
Evaluation and observability platform for shipping reliable AI apps
Freemium · $249/moModels & APIsMade in United States
Visit
Albumentations
Fast open-source image augmentation library for computer vision
FreemiumData & analytics
Visit
Keak
AI that writes, runs and picks winners from website A/B tests
FreemiumMarketing
Visit
DORS.AI
AI English conversation practice with pronunciation feedback
FreemiumEducation
Visit
IELTS Writing PracticeNew
IELTS writing simulator with estimated band and line edits
Freemium · $14.99/moEducation
Visit
OpenlayerNew
Testing, monitoring and governance for AI models and agents
FreemiumModels & APIsMade in United States
Visit
Promptmetheus
Prompt engineering IDE for testing prompts across 150+ LLMs
FreemiumModels & APIs
Visit
Testbook.aiNew
No-code Chrome extension for AI-assisted web app regression testing
FreemiumCoding
Visit
Faros
Measures and optimizes token spend across AI coding agents
FreemiumCodingMade in United States
Visit
Keploy
Open-source tool that turns API traffic into tests and mocks
Freemium · $19/moCoding
Visit
TestudyNew
Turn documents, tickets and recordings into training your team finishes
Freemium · $9.99/moEducation
Visit
Magic Patterns
AI prototyping tool that builds interactive UI from prompts
FreemiumDesignMade in United States
Visit
PracticeTalkingNew
Practice interviews and conversations with AI characters
FreemiumEducation
Visit
Debate AI
Practice arguing against an AI opponent and get feedback
FreemiumEducation
Visit
Cerebras
Wafer-scale chips serving open models at record inference speeds
FreemiumModels & APIsMade in United States
Visit
Brainscape
Flashcards with confidence-based repetition and AI card creation
FreemiumEducationMade in United States
Visit
LangtailNew
Prompt management and testing for product teams
Freemium · $99/moModels & APIs
Visit
HautechAI
Visual AI for virtual try-on and product photography
Freemium · $10 one-timeImage
Visit
nunu.aiNew
AI agents that test games and apps on real devices from plain-English tasks
Freemium · $200/moCoding
Visit
ResearchRabbit
Discover related papers through visual citation maps
Freemium · $12.50/moResearch & searchMade in United States
Visit
Use of English AINew
AI-generated practice exercises for Cambridge English exams
FreemiumEducation
Visit