How do most AI SaaS tools charge (credits vs monthly subscriptions)?

Most modern AI SaaS tools use hybrid pricing: an entry-level monthly subscription that includes a fixed monthly credit quota, paired with pay-as-you-go top-ups for high-volume LLM inference and generation.

Can I find free and open-source AI tools on SaaSearch?

Yes. You can filter listings by pricing model (Free, Freemium, or Paid) and tech stack. Many makers provide 100% free open-source tiers with self-hosting instructions and MIT licenses.

How are MRR and user counts verified for AI startups?

SaaSearch integrates directly with Stripe and Paddle telemetry to verify recurring monthly revenue, growth velocity, and active users, ensuring figures are authentic rather than estimated.

How can AI developers launch their product on SaaSearch?

Founders can submit their AI application for free. Once you add the verified SaaSearch launch badge to your homepage, your listing is published immediately to today's launch leaderboard with zero queue delay.

SaaSearch - The Search Engine for SaaS and AI products

36 products for Open source AI Engineering (0.06 seconds)

SagelingAd

https://sageling.ai›ai & automation›Sageling

Sageling: The free, local AI assistant for real work on your Mac.

Sageling is a free, private, and local AI assistant designed exclusively for Apple Silicon Macs to help users get real work done. It processes... Read more

5.0(100)1upvote

AI Assistant Local AI Mac App

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Pen

https://pen.dev›design & creative›Pen

Pen: An agentic canvas for building bold software. - result 1

Sep 17, 2026 - Pen is an innovative agentic canvas designed for rapidly building and prototyping software. It allows users to import components from any app,... Read more

5.0(100)1upvote

AI Design UI/UX Design Prototyping

0pen

Opencomplai

https://opencomplai.com›developer tools›Opencomplai

Opencomplai: Open-source EU AI Act compliance that runs in your CI - result 2

Sep 24, 2026 - Opencomplai is an open-source developer tool that automates EU AI Act compliance directly inside your CI/CD pipeline. It scans repositories to... Read more

5.0(100)1upvote

EU AI Act Compliance CI/CD

0opencomplai

Feast

https://feast.dev›ai & machine learning›Feast

Feast: The Open Source Feature Store for Machine Learning and AI - result 3

Sep 25, 2026 - Feast is an open-source feature store designed to deliver structured data to AI and LLM applications at high scale during both training and... Read more

5.0(100)1upvote

Feature Store Machine Learning AI

0feast

Hysen Labs

https://hysenlabs.com›developer tools›Hysen Labs

Hysen Labs: Plain-language analysis of open-source and AI projects - result 4

Sep 28, 2026 - Hysen Labs is a developer-focused platform that provides plain-language explanations, analysis, and interactive tools derived directly from... Read more

5.0(1)1upvote

Open Source Developer Tools AI Engineering

1hysenlabs

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One project for your team’s AI coding agents.
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Orchestrat
Coordinate your AI coding agents in a shared macOS workspace.
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Vyxora
Turn recordings and documents into Notes. Ask questions and check the source.
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Automated PageSpeed monitoring for Core Web Vitals, performance budgets, and actionable fixes.
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Rerun

https://rerun.io›developer tools›Rerun

Rerun: The data layer and visualization toolkit for physical AI and robotics - result 5

Sep 24, 2026 - Rerun is an open-source SDK and data platform designed to log, store, query, and visualize multi-rate, multimodal data for physical AI and... Read more

5.0(100)1upvote

Physical AI Robotics Data Visualization

0rerun

Lago

https://getlago.com›finance & fintech›Lago

Lago: Open-source billing and usage metering infrastructure for modern software - result 6

Sep 23, 2026 - Lago is an open-source billing infrastructure platform designed to handle real-time usage metering, flexible pricing models, and invoicing... Read more

5.0(100)1upvote

Billing Usage Metering Open Source

0getlago

DSPy

https://dspy.ai›ai & machine learning›DSPy

DSPy: The framework for programming—not prompting—language models. - result 7

Sep 27, 2026 - DSPy is a powerful open-source framework designed for algorithmically optimizing language model prompts and weights. It allows developers to... Read more

5.0(1)1upvote

AI Framework LLM Optimization Developer Tools

1dspy

Sageling: The free, local AI assistant for real work on your Mac.

5.0(100)

Sageling is a free, private, and local AI assistant designed exclusively for Apple Silicon Macs to help users get real work done. It processes all tasks directly on your computer, ensuring sensitive data remains private and never leaves your device unless explicitly requested. Ideal for professionals in fields like therapy, education, or general productivity, Sageling assists with tasks such as transcribing sessions, writing notes, or grading student work. This desktop application provides an ac...

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