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Top CONTACTS GitHub Repositories & Tools (2026)

Discover the most starred and trending open source tools tagged with #contacts.

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4 matching projects · updated Sep 28, 2026 How we rank ↗

#1 TRENDING flectar/mail Rust NEW 2026

Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 20 MB of RAM.

◇ android ◇ caldav ◇ calendar ◇ contacts

80 ↑ +80 today

#2 TRENDING espocrm/espocrm PHP 2014

EspoCRM – Open Source CRM Application

◇ calendar ◇ contacts ◇ crm ◇ crm-platform

981 ↑ +1 today

#3 TRENDING bitfireAT/davx5-ose Kotlin 2021

DAVx⁵ is an open-source CalDAV/CardDAV suite and sync app for Android. You can also access your online files (WebDAV) with it.

◇ android ◇ caldav ◇ calendars ◇ carddav

137 ↑ +1 today

#4 TRENDING relaticle/relaticle PHP 2024

Open-source CRM with native AI agent support. 37 MCP tools, REST API, self-hosted. Built with Laravel & Filament

◇ ai ◇ ai-agents ◇ alpine ◇ attio-alternative

203 ↑ +1 today

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