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AI Tools

AI Tools for Builders

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

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Customer Support

Cignara

Cignara builds conversational AI agents for enterprise customer support, designed to resolve common requests end to end over both phone and chat. The platform deploys AI agents and AI copilots that give real-time assistance to human staff, with actions that are verifiable, policy-bound, and designed to avoid hallucinations. Aimed at large B2C organizations, Cignara reduces contact center costs, cuts response times, and improves CSAT, and is trusted by Fortune 500 brands. The company is a Y Combinator (P26) startup headquartered in San Francisco with $10M raised.

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Finance

Leni

Leni is an agentic AI analyst purpose-built for commercial real estate and private equity investment teams. It automates underwriting, portfolio reporting, market research, and memo generation by pulling data directly from property management systems, ERPs, and finance platforms through a purpose-built data model. Leni's agentic architecture is designed around security and accuracy for investment finance workflows, supporting roughly 500,000 apartments and about $75B in portfolio value across its customer base, with vendors reporting up to 90% reductions in reporting time.

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Developer Tools

Tabstack

Tabstack is browsing infrastructure for AI systems, built and backed by Mozilla. It exposes a single API that turns a goal into a coordinated workflow of discovery, extraction, and verification across the open web, returning structured data or a fully cited research report. Fast Mode answers in 10–30 seconds with lightweight fetches; Balanced Mode runs the full agentic loop with multi-pass evaluation in 1–2 minutes. Mozilla does not train models on customer data, treats inputs as ephemeral, and practices strict data minimization.

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AI Infrastructure

Montage (M1)

Montage is a runtime framework for agentic user interfaces. Instead of having an LLM regenerate every chart, table, kanban, or form token-by-token each turn, agents emit a small intent schema and Montage compiles it server-side into production components. The team reports 10x faster hydration and 50–100x fewer output tokens compared to token-streamed UI, with model-agnostic and framework-agnostic output themed to the host brand. Aimed at companies shipping customer-facing AI agents that want consistent, branded interfaces without the per-turn inference cost of full UI regeneration.

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Cleo AI
AI Agents

Cleo AI

Cleo is an AI product manager for founders and lean teams that lives inside Telegram, Discord, and Slack. It learns your tone, knows your team, connects your sources, and runs the recurring PM work, including standups, follow-ups, decisions, and one-page briefs covering the top bet, the customers asking, the evidence chain, and a draft spec. Every fact Cleo learns is transparent with a visible source and confidence, and it operates across five trust levels from observer to operator. Cleo is free to use in Telegram.

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Voice AI

Thinnest AI

ThinnestAI is BYOK programmable voice AI infrastructure for building human-like AI phone agents at scale. Built in India for global teams, it supports 100+ languages (every official Indian language plus global) with native STT + TTS pipelines per language — not English-with-translation. Bring your own LLM, STT, TTS, and telephony providers. No-code flow builder with RAG knowledge bases and MCP support. Flat ₹1.5/min platform fee with INR billing, native SIP and Twilio integration, REST + Python + JS SDKs. Targeted at Indian banks, NBFCs, insurers, BPOs, edtech, healthtech, D2C, and logistics companies.

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