Top 3 zendesk-alternative Open-Source Projects

UVDesk

5 6,485 5.1 PHP

UVdesk Opensource Community Helpdesk Project built for all to make a Full Ticketing Support System along with many more other features.
Erxes

15 3,426 10.0 TypeScript

Source available experience management infrastructure. Pioneering the future of experiences with XOS (Experience Operating System). Hubspot + Qualtrics alternative

Project mention: Has Anyone Tried Erxes.io? | news.ycombinator.com | 2024-05-03

InfluxDB

www.influxdata.com featured

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
FreeScout

33 2,663 9.7 PHP

FreeScout — Free self-hosted help desk & shared mailbox (Zendesk / Help Scout alternative)

Project mention: Yet another hepdesk ticket post... | /r/sysadmin | 2023-05-25

I think FreeScout is going to be something to consider.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).