#1 Developer ToolsFree
CalDAV — alternative #1 to address book
and CardDAV protocol servers and web clients/interfaces for Electronic calendar, address book and contact management.
Catalogue source
Recorded alternatives
Alternatives to address book
Every candidate below sits in Developer Tools. What ends up on this page is decided entirely by a recorded score — not by bidding, not by editor taste. Review both records, check current vendor terms, then decide.
#2 Developer ToolsFree
CardDAV — alternative #2 to address book
CalDAV and protocol servers and web clients/interfaces for Electronic calendar, address book and contact management.
Catalogue source
#3 Developer ToolsFree
contact management — alternative #3 to address book
CalDAV and CardDAV protocol servers and web clients/interfaces for Electronic calendar, address book and .
Catalogue source
#4 Developer ToolsFree
Electronic calendar — alternative #4 to address book
CalDAV and CardDAV protocol servers and web clients/interfaces for , address book and contact management.
Catalogue source
#5 Developer ToolsPaid
ClipGPT — alternative #5 to address book
ClipGPT summarizes and organizes your notes and bookmarks using OpenAI's GPT API. [Paid]
Catalogue source
#6 Developer ToolsUnknown
cosmos-mcp — alternative #6 to address book
📇 ☁️ 🏠 🍎 - Personal knowledge graph shared across MCP clients. Account-keyed and portable as a .polarity file, with sources for iMessage, br...
GitHub source
#7 Developer ToolsUnknown
FSCalendar — alternative #7 to address book
A fully customizable iOS calendar library, compatible with Objective-C and Swift.
GitHub source
#8 Developer ToolsUnknown
iso-8601-date-formatter — alternative #8 to address book
A Cocoa NSFormatter subclass to convert dates to and from ISO-8601-formatted strings. Supports calendar, week, and ordinal formats.
GitHub source
Questions about this page
How were these alternatives selected?
Each candidate is a live catalogue record in the same primary category, picked by a deterministic score that Oryxen records in its catalogue: how many meaningful words the two listings share, whether their pricing classes oppose (a paid product against a free one), whether both are open source, and whether either record is featured. The same catalogue state always produces the same list — no randomness, no manual ranking.
Are these alternatives ranked by payment?
No. Rows are ordered only by the recorded score, highest first, with alphabetical ties — payment never influences the order, nothing here is paid placement, and Oryxen charges no listing or placement fee.
Always verify current terms with address book directly — Oryxen records pricing classes, not live quotes.