Bonds – Open-source personal relationship manager (Go and React)
Ground-up Go rewrite of abandoned Monica with single binary, 1300+ tests, and CardDAV sync.
ldap-carddav - A CardDAV server with a LDAP server as contacts and authentication backend
LDAP-backed CardDAV with bidirectional sync for enterprise contact management.
IT administrators, enterprise contact management teams
SOGo · Radicale · Baikal
-- Features of ldap-carddav include 1. Create, edit, rename and delete contacts directly in LDAP server using CardDAV protocol. 2. Authenticate CardDAV users against LDAP server. 3. Multiple address book support. 4. Global and private address book support. 5. Bidirectional sync between LDAP server and CardDAV clients (contacts deleted directly in LDAP are deleted in CardDAV clients asynchronously). 6. Supports WebDAV sync. 7. Fully compatible (and can coexist) with LDAP address book applications. 8. Extensive and customizable configuration option to map vCard properties to LDAP attributes including multi-value and composite value properties and attributes. 9. Contact group support. 10. Media (like profile picture) support for contacts. 11. Caching support using popular backends like Memcached, APCu and file system.
Ground-up Go rewrite of abandoned Monica with single binary, 1300+ tests, and CardDAV sync.
iOS contacts store anniversaries; this app finally pushes them to your calendar.
Graph-based triples instead of Firebase documents — genuine architectural differentiation.
BuiltWith plus verified emails and LinkedIn profiles, but ZoomInfo and Apollo already do this.
Breaks Apple's walled garden by reading local files directly instead of forcing cloud sync.
Syncthing isolation beats sandboxing for AI agent file access.