15,347 tools
Compare plans, free tiers and API access across thousands of AI tools — every fact carries its source and check date.
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Free planDeveloper tools
NuGet Trends is a web tool for exploring download history, growth, and framework adoption across the NuGet ecosystem. The homepage lets you search packages, compare trends, and spot rising libraries so .NET teams can make data-informed dependency choices.
Free planDeveloper platform
Nullstone is an internal developer platform that helps teams launch secure full-stack apps and preview environments on AWS or GCP with Terraform-backed modules, RBAC, and Git-driven deploys. Plans scale users, environments, preview env counts, and enterprise controls.
Free tier unknownResearch
Numen is a San Francisco biotechnology company building infrastructure to drive cancer mortality toward zero. The public site describes rapid at-home diagnostics, high-volume health data collection, and proprietary models for earlier intervention and better outcomes.
Free tier unknownCampaign software
Numero is an all-in-one donor database and call-time app for political campaigns, promising deduped donor lists, giving history at call time, and mobile workflows that replace spreadsheets. The site cites large fundraising lifts for campaigns that switch from legacy tools.
Free planAssistant
numverify provides a JSON REST API to validate and look up phone numbers across 232 countries, returning carrier, line type, and formatting details. Subscription plans scale monthly API request quotas from a free non-commercial tier through commercial Basic and Professional bundles.
Free planDeveloper tools
The documentation covers installation via npm, expressive filters and tags, async support, and precompiling templates for client or server rendering pipelines.
Free tier unknownVoice
NVIDIA NeMo is a framework and software suite for building, customizing, evaluating, and operating AI agents and generative models. It spans data curation, speech and language collections, guardrails, observability, and deployment tooling for enterprise agent lifecycles.
Free planCode
NxCode is an AI app builder that turns natural-language product descriptions into deployable applications using Conductor and Virtuoso agents with Docker-based code execution. The site targets founders and builders who want production-oriented generation, debugging passes, and edge deployment without manual coding.
Free planDeveloper tools
Nylas provides APIs and agent accounts to integrate email, calendar, and meeting data from hundreds of providers including Gmail, Microsoft, IMAP, and Zoom. The homepage positions Nylas as a communication data layer for both human workflows and AI agents that need provider-normalized messaging and scheduling under one platform.
Free tier unknownAssistant
o11 is an AI account manager for customer-facing teams. It consolidates customer context, suggests thoughtful next steps, and helps teams follow through on relationships, with a product UI covering inbox, signals, and routines plus demo-led onboarding.
Free planResearch
OASIS is an open-source social media simulator from CAMEL-AI that combines large language models with rule-based agents to mimic up to one million users on Twitter- and Reddit-like platforms. Researchers use it to study information spread, polarization, and herd behavior at scale.
Free planAssistant
Objenesis is a small open-source Java library that instantiates objects without calling their constructors, useful for serialization frameworks, proxies, and dependency injection containers when default constructors are unavailable.
Note-taking
Obsidian is a local-first note-taking app that stores linked Markdown notes on your device, with optional paid Sync and Publish services and a plugin ecosystem.
Free planResearch
Obsidian is a private, local-first notes app for linking ideas in markdown vaults, with a plugin ecosystem that teams extend using community and commercial AI tools. The official site emphasizes free core editing while optional Sync and Publish services add encrypted sync and web publishing.
Free planAssistant
OCR.space offers free online OCR for images and PDFs plus a REST OCR API with multiple engines, searchable PDF output, and higher quotas on PRO plans. Developers can upload files in the browser or automate conversions through API keys.
Free tier unknownAssistant
Octimine is Dennemeyer’s AI-assisted patent intelligence platform for semantic search, monitoring, visualization, and collaborative review. R&D teams and IP professionals use natural-language search and the Octi assistant to explore large patent corpora in a shared workspace.
Free planLow-code
October CMS is a self-hosted PHP content platform built on Laravel for agencies and developers who want CMS, marketplace plugins, and project licensing in one ecosystem. The official site emphasizes Laravel familiarity, a theme and plugin marketplace, and license tiers for single sites or unlimited client work.
Free planCode
Octobox is a notification manager that untangles GitHub notifications with filters and workflows for open source and private repositories. Paid access for private repos costs from $10 per user per month via GitHub Marketplace or Open Collective donations, while public OSS repos stay free.
Free planCode
OctoPrint is the snappy web interface for controlling and monitoring 3D printers from a browser, with plugins, remote job management, and AGPL-licensed open source code. It targets makers who want full remote control, timelapses, and extensibility without proprietary host software.
Free planFinance
Ocular is a self-hosted budgeting web app for tracking income and expenses across multi-year budgets with dashboards, charts, import/export, and progressive web app support. The project emphasizes privacy by keeping financial data on your own server and deploys quickly via Docker Compose.
Free planAssistant
ODB is an open-source C++ object-relational mapping system from Code Synthesis that persists C++ objects to relational databases without manual SQL table mapping. It ships with compiler tooling, runtime libraries, and documentation for multiple database backends.
Free planProductivity
ODD Island is a Windows top-screen command hub that includes ChatGPT assistance and Google Lens screen search alongside launch, media and system controls. Its documented AI actions include asking questions, summarizing text and drafting email from the notch. Screen selection can be passed to Lens for visual search and text recognition.
Free tier unknownAssistant
Odo is an AI email assistant that monitors your inbox, surfaces important messages in daily briefings, drafts replies in your writing style, and answers natural-language questions about threads, contracts, and follow-ups through app.useodo.com.
Free planBusiness
Odoo is an open-source business platform that bundles ERP, CRM, accounting, inventory, HR, websites, e-commerce, and productivity apps in one suite. Organizations can run Odoo Online or self-manage editions while connecting finance, sales, operations, and customer-facing channels.
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