Instead of FreeSWITCH
FreeSWITCH alternatives
FreeSWITCH provides an open-source framework for real-time voice and video, with call routing, video bridging, media transcoding and protocol connections. It supports SIP, inbound and outbound calling, and call recording. Teams can manage calls and channels over the Event Socket, connect application code through HTTP backends and several embedded languages, or link to SignalWire for PSTN calling. It runs on Linux, macOS and Windows, and its MPL license permits production use at no cost.
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Wazo Platform
by Wazo PlatformFree plan AndroidAPIiPhone+3Teams building API-first voice, video and messaging services — Wazo adds Python-based telecom microservices with WebRTC, REST, WebSocket and webhook interfaces, while FreeSWITCH is an open-source voice and video framework.
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Voicent
Free plan AndroidAPIiPhone+3Businesses running automated calls, email and text campaigns — Voicent adds browser-hosted campaigns, predictive dialing and agent dashboards, while FreeSWITCH offers a self-hosted communications framework.
Free plan · paid from $19/mo · 30-day trial Visit site - 3
Telnyx Text-to-Speech API
by Telnyx Text-to-Speech APIFree plan APIWebTeams converting text to speech through an API — Telnyx Text-to-Speech API focuses on API-based speech generation with voice cloning and MP3 or WAV exports, unlike FreeSWITCH's broader voice and video framework.
From $0.05 Visit site - 4
Twilio Studio
Free plan APIWebTeams visually building communication workflows — Twilio Studio adds a visual workflow canvas with triggers and backend connections, while FreeSWITCH provides a programmable voice and video framework.
Free plan · paid from $0.00 Visit site - 5
Asterisk
Free plan APILinuxSelf-hostedTeams building Linux-based communications servers — Asterisk offers PBX, voicemail, IVR and conferencing features with telephony interfaces and protocols, while FreeSWITCH emphasizes real-time voice and video media handling.
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SIP.IO
Free plan APIWebTeams needing cloud contact center and browser calling — SIP.IO adds hosted contact-center features, browser WebRTC calling, AI agents and managed Teams Direct Routing beyond FreeSWITCH's framework.
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Telnyx TeXML
Paid WebDevelopers building cloud voice applications with TeXML — Telnyx TeXML is a cloud voice API product with speech recognition and data lookup, while FreeSWITCH is a self-hostable voice and video framework.
From $0.00 Visit site - 8
Aculab Cloud
Free plan AndroidAPIiPhone+27.7 Visit site - 9
Kamailio
Free plan APILinuxSelf-hosted - 10
YateClient
Free plan AndroidiPhoneLinux+2 - 11
Callr
Free trial AndroidAPIiPhone+1 - 12
Infobip Voice API
Free trial AndroidAPIiPhone+1 - 13
Plivo Voice API
Free trial AndroidAPIiPhone+16.1 Visit site - 14
Amazon Chime SDK PSTN Audio
Paid AndroidAPIiPhone+26.0 Visit site - 15
D7 Networks
Free trial APIWeb6.0 Visit site - 16
Amazon Chime SDK Voice Connector
Paid APISelf-hostedWeb - 17
drachtio
Free plan Linux - 18
Telnyx SIP Trunking
Free trial AndroidAPIiPhone+15.9 Visit site - 19
46elks
Paid APIWeb5.8 Visit site - 20
Fonoster
Free plan Web - 21
jambonz
Free plan Web - 22
sipgate.io
Free plan Web - 23
CallFire API
Paid API - 24
Commio Voice API
Paid API - 25
Kaleyra Voice API
Paid API - 26
Orange Voice API
Paid API - 27
Apifonica Voice API
Paid Web - 28
EnableX Voice API
Paid AndroidiPhoneWeb
Self-hosting puts infrastructure maintenance on the team, and the open-source edition comes with community support; commercial support and modules are separate options. Accessing its packages requires a free SignalWire account. The alternatives here range from telecom microservices and hosted campaign software to workflow builders and focused APIs, so compare what kind of system you need. Weigh deployment responsibility, platform fit, support, and whether a product's voice, messaging, routing or automation capabilities match the work you want it to handle.