Alternatives
10 best Foundry alternatives
Tools that cover the same task as Foundry (code), ranked by how completely their pricing, free tier and API access are documented. Checked Oct 4, 2026.
- Foundry starts at
- Not listed
- Free plan
- Free tier unknown
- API
- API available
- 01
KERNEL
KERNEL provides cloud browser infrastructure for AI agents and web automations, spinning up sandboxed Chromium sessions with stealth, managed auth, GPU acceleration, live view, and telemetry. Developers connect via CDP, WebDriver BiDi, Playwright, OpenAPI, MCP, or official SDKs in TypeScript, Python, and Go.
Best for: Teams building QA, healthcare, e-commerce, or GTM agents that need reliable real-browser automation at scale.
- 02
LangSmith
LangSmith is an enterprise LLM observability, evaluation, and monitoring platform built by LangChain.
Best for: Developers and engineering teams building LLM-powered applications and agents who need debugging, prompt optimization, latency tracking, and quality evaluation.
- 03
Freestyle
Freestyle provides full Linux VMs purpose-built for long-running AI agents with millisecond startup, live cloning, pause/resume, nested Docker, and custom networking. Developers use the VMs for coding agents, browser automation, and containerized workloads.
Best for: Teams building autonomous agents that need persistent Linux environments, previews, and Docker inside the VM.
- 04
Context.dev
Context.dev is a web data API for AI agents and LLMs to scrape pages into Markdown, crawl sites, map domains, run batches, research the web, monitor changes, and retrieve brand data through one REST platform with SDKs and MCP support.
Best for: Developers building agents, RAG apps, or products that need fresh web content without running their own scraping infrastructure.
- 05
Notte
Notte is a browser platform for AI agents offering concurrent browser sessions, live view, residential proxies, authenticated profiles, prompt-driven browser agents, and colocated browser functions. Credit-based plans bill transparent usage for sessions, functions, proxies, and LLM tokens.
Best for: Teams building web agents, automations, and eval workflows that need scalable headless browsers with antibot handling.
- 06
Cosine
Cosine, hosted at cosine.sh, is a sovereign AI lab training specialized coding agents and models for secure environments. It offers Lumen Scout, Outpost, and Sovereign models plus CLI and cloud surfaces with transparent credit-based plans for developers and regulated teams.
Best for: Developers and organizations that need frontier coding agents inside secure or air-gapped deployments with credit-based usage.
- 07
Langfuse
Langfuse is an open-source LLM engineering platform for tracing, evaluating, and improving AI agents with collaborative debugging and metrics. Langfuse Cloud offers hosted Hobby, Core, and Pro tiers metered in observability units.
Best for: AI engineers who need open-source-friendly observability and eval workflows without building tooling in-house.
- 08
Keragon
Keragon is a HIPAA-compliant healthcare automation platform with no-code workflows, AI agents, and 400+ integrations. Clinics and digital health companies automate intake, scheduling, billing, and patient communication while keeping data on Keragon’s compliant infrastructure.
Best for: Healthcare practices and digital health startups automating patient ops without custom engineering.
- 09
Mem0
Mem0 provides persistent memory infrastructure for AI agents and applications so context survives across sessions, users, and agents. The platform offers hosted plans with SDK integration plus open-source options for developers building production agents that need durable recall.
Best for: Agent builders and app teams that need hosted memory layers with defined add and retrieval quotas.
- 10
WebscrapeAi
Webscrape AI is a no-code web data collection tool where you enter a URL and fields to extract, and the service scrapes pages on your behalf.
Best for: Analysts and operators who need structured web data without building custom scrapers.
Foundry alternatives: common questions
What is the best free alternative to Foundry?
KERNEL has an ongoing free plan. Free tier is $0 per month plus usage, includes $5 monthly free credits, five concurrent browsers, live view, stealth, managed auth for three connections, and one-day session replays. Free plans change, so check the vendor before relying on one.
What is the cheapest Foundry alternative?
Context.dev has the lowest listed starting price at $19/mo.
Which Foundry alternatives have an API?
KERNEL, LangSmith, Freestyle, Context.dev, Notte mention API or developer access.