Zendesk starts around $19–55 per agent per month. Intercom costs more. For a five-person team, that can mean thousands of dollars a year, before AI, before the WhatsApp integration that’s often sold separately. No wonder so many businesses hunt for free open-source alternatives.

The surprising part: open-source options are genuinely good now. What rarely gets told is their true cost, because “free” in the self-hosted world carries a big asterisk.

Quick summary

Platform	License	Real cost	Built-in AI	Best for
Chatwoot	MIT (community)	Server + engineer time	Via integrations	Teams with DevOps
KIRA.id	Managed enterprise Chatwoot + AI	Rp 49k (~$3)/mo up	Yes, active	Businesses without IT teams
Rocket.Chat	MIT	Server + admin	Limited	Teams needing internal chat too
UVdesk	Open source	Server + setup	No	Traditional email ticketing
FreeScout	AGPL	Cheap hosting	No	Very small teams

1. Chatwoot, the king of open-source helpdesks

Chatwoot (MIT license) is the most popular open-source omnichannel helpdesk: WhatsApp, Instagram, email, and web chat in one inbox, agent assignment, complete APIs. Self-host it and the license is free.

Real cost: a VPS at roughly $10–30/month, plus engineer hours for setup, upgrades, backups, and security. If your engineer’s time is worth $15/hour, “free” becomes real money within the first month.

Pick it if: you have technical staff and want full control over your data and code.

2. KIRA.id, enterprise Chatwoot without the sysadmin work

We build KIRA.id on top of the Chatwoot foundation, same proven omnichannel inbox, then add the layer you’d otherwise assemble yourself: an AI agent that resolves tickets, WhatsApp broadcasts & campaigns, document automation, and human engineer support. From Rp 49k (~$3)/month, no servers to manage.

Pick it if: you want Chatwoot’s power without hiring DevOps.

Read the head-to-head: Chatwoot vs KIRA.id →

3. Rocket.Chat, if you need internal + external chat

Open-source Rocket.Chat is strong for team communication (think self-hosted Slack) and can serve customer live chat. For pure omnichannel customer service, it’s less focused, ticketing workflows aren’t as deep as a dedicated helpdesk.

Pick it if: internal chat is the primary need and a public widget is a bonus.

4. UVdesk, traditional ticketing

UVdesk is an open-source PHP helpdesk built around classic email-to-ticket flows. Solid at what it does. Modern omnichannel (WhatsApp/Instagram) isn’t its strength, and the UI shows its age next to SaaS rivals.

Pick it if: your volume is mostly email and you need free classic ticket structure.

5. FreeScout, self-hosted Help Scout

FreeScout (AGPL) is a lightweight Help Scout-style shared email inbox. Extremely light, runs on cheap hosting. But it’s email-only, no WhatsApp, no Instagram, no AI.

Pick it if: your team is 1–3 people and everything happens over email.

A practical decision rule

Have in-house engineers? Chatwoot Community Edition is hard to beat.
No IT team but still want Chatwoot capabilities? Use a managed enterprise version, that’s exactly where KIRA.id sits, from Rp 49k (~$3)/month.
Only need email? FreeScout or UVdesk are enough.
Need AI that actually answers customers? Of this list, only KIRA.id includes an active resolving agent in its cheapest plan.

Want a quick sanity-check on which fits? Email us, we’ll honestly say when self-hosting yourself is the better choice.