Stacosys (aka STAtic blog COmment SYStem) is a fork of [Pecosys](http://github.com/kianby/pecosys) trying to fix Pecosys design drawbacks and to provide a basic alternative to comment hosting services like Disqus. Stacosys works with any static blog or even a simple HTML page.
Privacy concerns: only surname, gravatar id and comment itself are stored in DB. E-mail is optionally requested in submission form to resolve gravatar id but never sent to Stacosys.
Stacosys offers a REST API to retrieve and post comments. Static blog is HTML-based and a piece of JavaScript code interacts with Stacosys using HTTP requests. Each page has a unique id and a request allows retrieving comments for a given page. Similarly, a form request allows to post a comment which is relayed to the administrator by e-mail. For this purpose an SMTP configuration is needed.
Stacosys fits my needs, and it manages comments on [my blog](https://blogduyax.madyanne.fr) for a while. I don't have any plan to make big changes, it's more a python playground for me. So I strongly encourage you to fork and enhance the project if you need additional features.