head to head · open source
EspoCRM vs harvey
EspoCRM has 3,498 GitHub stars, 1,011 forks, 69 open issues and last shipped yesterday. harvey has 1,716 stars, 337 forks, 12 open issues and last shipped today. EspoCRM leads on adoption by 104% (3,498 vs 1,716 stars). EspoCRM is written in PHP under AGPL-3.0; harvey is written in Python under MIT. EspoCRM has attracted 29% as many forks as stars, harvey 20%. harvey was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| EspoCRM | harvey | |
|---|---|---|
| GitHub stars | ★ 3.5K | ★ 1.7K |
| License | AGPL-3.0 | MIT |
| Written in | PHP | Python |
| Last push | 2026-10-19 | 2026-10-20 |
| Forks | ⑂ 1.0K | ⑂ 337 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick EspoCRM if
- You weight community size — 3.5K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick harvey if
- You want the harvey feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and harvey fits your workflow better
About EspoCRM
EspoCRM EspoCRM is a free, open source CRM platform designed to help organizations build and maintain strong customer relationships. It provides a wide range of tools to store, organize, and manage leads, contacts, sales opportunities, marketing campaigns, support cases, and more – all business information in a simple and intuitive interface. Architecture EspoCRM is a web application with a frontend designed as a single page application and a REST API backend written in PHP. Demo You can try the CRM on an online demo. Requirements PHP 8.3 8.5; MySQL 8.0 (and later), or MariaDB 10.3 (and later); PostgreSQL 15…
read the full EspoCRM overview →
About harvey
Harvey An autonomous sales agent that runs on your Claude Code or Codex subscription. Harvey finds businesses worth selling to, learns something specific about each one, writes cold email that references it, sends it, reads the replies, and works the conversation toward a meeting. It runs on your machine, in a loop, on its own. The unusual part: there is no model API bill. Harvey uses your Claude Pro or Max subscription through Claude Code, or your ChatGPT subscription through Codex. Model calls use the plan you already pay for, without an API key or per token API billing. Claude is the default; Codex is an opt…
read the full harvey overview →
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Frequently asked questions
Is EspoCRM or harvey more popular?
EspoCRM has 3,498 GitHub stars and harvey has 1,716. EspoCRM has the larger community by that measure.
Are EspoCRM and harvey free?
Both are open source. EspoCRM is licensed under AGPL-3.0 and harvey under MIT. Neither carries a licence fee.
What is the difference between EspoCRM and harvey?
EspoCRM is written in PHP and harvey in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, EspoCRM or harvey?
Choose EspoCRM if you want the larger community (3,498 stars) or its AGPL-3.0 licence terms. Choose harvey if its feature set, stack or MIT licence fits better. Both are self-hostable.