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AI Tools

AI Tools for Builders

3.7k+ AI tools. Sorted by what actually ships.

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Developer Tools

Respan Gateway

Respan (formerly Keywords AI) is a unified LLM engineering platform that bundles an AI gateway, observability, evaluations, and prompt management into one product. Its OpenAI-compatible gateway routes requests to 500+ models through a single endpoint with per-request provider fallback, exact-match and semantic caching, per-user and per-feature budgets, and rate limits, while every call is traced and can be scored with LLM-as-judge or human review. It adds roughly 10ms P95 latency overhead and is SOC 2 / HIPAA / GDPR aligned.

AI gatewayLLM observabilityevals+2
Developer Tools

Novus

Novus is a product agent that connects to your code repository, auto-instruments your product with no manual tagging, and surfaces usability and analytics insights before you think to look. Its GitHub integration watches every pull request, warns when a change might break event tagging, suggests new things worth tracking, and flags the UX impact of what you ship. Built by Pendo, it gives engineers and PMs continuous product intelligence without dashboards to babysit.

product analyticsai agentauto-instrumentation+3
Audio & Voice

Sun

Sun is a realtime voice API and multi-speaker voice model built for collaborative voice interaction rather than one-on-one turn taking. Unlike existing realtime voice APIs designed for a single user talking to a single AI, Sun handles group settings — meetings, classrooms, sales calls, multi-agent debates, and brainstorms — with multi-speaker awareness and a 10x context window. Agents respond only when addressed by name with a question, and voice-activity monitoring prevents interrupting active speakers. Positioned as an alternative to ChatGPT Realtime and Gemini Live APIs.

voice-apirealtimemulti-speaker+3

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Marketing

Creatify Agent

Creatify Agent is an AI creative agent built specifically to make ads that convert, trained on advertising performance data from over 15 million ads and $1B+ in analyzed ad spend. It researches the brand, product, goals, and audience, locks in verified brand names, logos, and claims to prevent hallucinations, then writes creative strategy, picks hooks, generates scripts, casts characters, produces the video, and delivers platform-ready variations for Meta, TikTok, and Instagram Reels in 75+ languages.

video-adsad-generationmarketing+3
Marketing

SearchAd AI

SearchAd AI is an AI-first console for Apple Search Ads. Every action that touches an Apple Search Ads account is split into a read step, a drafted plan, and an approval gate — the model proposes, you dispose. Plan campaigns by chat, review the diff, approve, and SearchAd's backend signs the API call. Each Apple Search Ads private key is stored encrypted in an isolated per-account vault that even the user's browser cannot read back; the AI model itself never sees the key, only the backend uses it to sign a single request after explicit approval. Targeted at indie app teams and ASA agencies that want chat-driven campaign planning without giving an LLM raw key access.

apple-search-adsppcchat-ops+3
note.mdnote.md logo
Productivity

note.md

note.md is a private, local-first markdown workspace for macOS built for focused writing, research, and structured thought. It supports GitHub Flavored Markdown, complex tables, and LaTeX math, with bidirectional links and a visual graph to connect ideas. Smart citations and research-table extraction are powered by local AI models that keep your data on-device, and you can import scientific papers and PDFs directly. Markdown is the storage format - no proprietary lock-in.

markdownresearchlocal-first+3
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