AI agents to build and ship software

MCP-compatible tool-calling infrastructure with auth, hosted tools, and usage-based pricing for agent builders.

Entry price

Free Hobby; Growth $25/mo plus usage

No-code

2/5

Free open-source observability and evaluation for LLM apps, with Arize's paid platform when you outgrow it.

Entry price

Free open source; Arize AX Pro from $50/mo

No-code

2/5

Evals and observability for teams shipping real AI agents, with a free starter path and serious paid tier.

Entry price

Free Starter; Pro $249/mo plus usage

No-code

2/5

Tool access, auth, and integrations for AI agents that need to take real actions across apps.

Entry price

Free 20K tool calls/mo; paid from $29/mo

No-code

2/5

LLM observability and AI gateway for tracking requests, costs, latency, and production behavior.

Entry price

Free Hobby; Pro $79/mo plus usage

No-code

3/5

Open-source LLM observability and evals for builders who want traces, prompts, datasets, and cost visibility.

Entry price

Free Hobby; Core $29/mo plus usage

No-code

2/5

LangChain's tracing, eval, deployment, and monitoring platform for builders shipping agents.

Entry price

Free Developer; Plus $39/seat/mo plus usage

No-code

2/5

Stateful agent platform from the MemGPT team, built around persistent memory and long-running agents.

Entry price

Free tier; Pro $20/mo; API plan $20/mo plus usage

No-code

2/5

A terminal coding agent a technical solo founder can use to ship and maintain their own product.

Entry price

From ~$20/mo (Claude Pro) or API usage-based

No-code

2/5

An AI code editor that lets a technical founder build their own product faster, on a free-to-$20 tier.

Entry price

Free tier; Pro ~$20/mo

No-code

2/5

An AI-native IDE for a technical founder who wants the agent to stay in flow with them.

Entry price

Free tier; paid from ~$15/mo (Pro)

No-code

2/5

An open-source coding agent for VS Code; free to install, you just pay the model you plug in.

Entry price

Free (open source); you pay your own model API usage

No-code

2/5

A low-level framework for building stateful agents; serious developer tooling, not a no-code app.

Entry price

Free (open source); managed Platform priced separately

No-code

1/5

A type-safe Python agent framework; excellent for builders, not something a non-coder can run.

Entry price

Free (open source); you pay model API usage

No-code

1/5

An autonomous AI engineer built for teams; a stretch for a solo founder's budget and workflow.

Entry price

From ~$20/mo entry credits; scales usage-based (team-oriented)

No-code

1/5

An open-source library that lets AI agents drive a browser; a developer building block, not an app.

Entry price

Free (open source); hosted cloud usage-based

No-code

1/5

A Python framework for teams of collaborating agents; powerful for builders, not for non-coders.

Entry price

Free (open source); hosted enterprise platform priced separately

No-code

1/5

A free, lightweight framework for building agents in code; for developers, not non-technical founders.

Entry price

Free (open source); you pay model API usage

No-code

1/5

A free Microsoft framework for building multi-agent systems; for developers, not non-coders.

Entry price

Free (open source); you pay model API usage

No-code

1/5

An AI-native search API for builders; powerful, but it is developer plumbing, not an app you use.

Entry price

Free allowance; usage-based (per-search) after

No-code

1/5