Collection of guides, documentation and useful resources for developers (in English).
Useful docs and resources maintained by community members.
Comprehensive resource which aims to organize the technical knowledge about Monero. Some sections might be outdated.
Rich list of examples and docs related to Monero development.
Community of Monero developers. Contains libraries and resources and guides of some Monero Workgroups, like the Localization Workgroup and the Outreach Workgroup.
One of the most complete resources for both users and developers.