Callr
7.6#2 in voice apisFrom €599 a monthAndroidiOSWebAPI
VisitCallr vs FreeSWITCH
FreeSWITCH
6.4#12 in voice apisFree planFree planAPILinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | Callr | FreeSWITCH |
|---|---|---|
| Call control | The API supports click-to-call, conferencing, DTMF input, voicemail detection, real-time call control and business-hours routing. | The Event Socket exposes call control, channel management, and the internal event system over TCP to external processes. |
| Founded | 2011 | 2006 |
| Integrations | Callr lists native connectors for Salesforce, HubSpot, Google Analytics, and Google Ads, plus a REST API and webhooks. | FreeSWITCH documents integrations through HTTP backends, embedded Lua, Perl, Python, JavaScript and Java, and SignalWire connectivity. |
Callr plans
- Professional€599 a month
- EnterprisePriced on request
FreeSWITCH plans
- FreeSWITCH Open SourceFree
- FreeSWITCH AdvantagePriced on request
- SignalWire PlatformPriced on request
Pick Callr if…
You want what its maker publishes above — check its page for the details.
Pick FreeSWITCH if…
FreeSWITCH may suit teams building voice or video communication systems that need call routing, media handling, and protocol connections. Self-hosting requires dedicated resources to maintain infrastructure.