FreeSWITCH vs. Kamailio Comparison


FreeSWITCH	Kamailio	+	+
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		Related Products 3CX 3CX is a software-based, open standards IP PBX that offers complete Unified Communications, out of the box. Suitable for any business size or industry 3CX can accommodate every need; from mobility and status to advanced contact center features and more, at a fraction of the cost. Ideal for companies working remotely, 3CX includes mobile apps, video conferencing and website live chat. Installation, management and maintenance of the PBX is so easy that you can effortlessly manage it yourself, whether on an appliance or server at your premise on Windows, Linux or in the cloud. Alternatively you can choose to have it hosted by 3CX for a completely hassle-free solution. 1,236 Ratings Visit Website Yeastar P-Series PBX System Focusing on delivering "Easy-first Unified Communications", Yeastar P-Series Phone System offers companies of all sizes with a complete package for calls, video, messaging, and integrations, out of the box. 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SMS: 10DLC \| Short code \| Toll-free \| SimplyRCS (simplyrcs.ai): RCS Rich \| RCS Media through API & No-Code Platform Voice: SIP Trunking \| VoIP \| Termination \| Origination Numbers/DIDs: Local, short code & toll-free numbers \| BCID (Branded Caller ID) Number Intelligence/Lookup: Subscriber Info (CNAM) \| Carrier Information \| Carrier Type (Fixed or Wireless) \| Federal DNC Status Signalmash enterprise-grade reliability, boutique-level support. 16 Ratings Visit Website Intermedia Unite Intermedia Unite® brings business communications, collaboration, and customer engagement into one easy-to-use platform—keeping teams connected, productive, and responsive from anywhere. It replaces fragmented tools by combining business phone service, video conferencing, team chat, and file sharing into one seamless experience, so employees can collaborate without switching apps. Unite delivers enterprise-grade calling with 100+ features, integrated customer engagement, and enhanced Microsoft Teams experiences. With mobile and desktop apps, users can call, meet, message, and engage customers from anywhere while maintaining a consistent business identity. AI-powered transcription, summaries, and insights help teams capture details and follow up efficiently. Backed by 99.999% uptime and J.D. Power-certified support, Unite ensures reliable performance—resulting in simpler communications, more productive teams, and better customer engagement. 1,631 Ratings Visit Website Datagate Telecom Billing Datagate is a SaaS, telecom billing solution for MSPs that sell UCaaS, VoIP, mobile voice & data services under their own brand. Datagate integrates with popular software systems that MSPs use including ConnectWise Manage, QuickBooks, Xero, Stripe, Authorize.net and others. Suitable for MSPs in USA, Canada, UK, Australia and New Zealand; Datagate & partners handle all telecom tax & compliance requirements. 12 Ratings VKS VKS is a digital work instruction software that makes it easy for companies to throw out paper work instructions and transform into a digital factory. Create digital work instructions and standard operating procedures (SOPs) using pictures, videos, PDFs, annotations and more. Integrate in-process quality checklists to help reduce defects by up to 95%. Standardize best practices and increase productivity by 20%. With real-time process control and built-in reports, you also get 100% guaranteed traceability. By switching to digital work instructions, you can capture tribal knowledge and eliminate the skills gap. 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Recorded calls are stored in call detail records and can be played or downloaded at any time. 3,225 Ratings Visit Website 800.com 800.com is a business phone and call tracking platform that helps small and growing businesses understand, manage, and respond to inbound calls more effectively. The platform provides local and toll-free numbers, call tracking, call recording, voicemail, SMS, and detailed call reporting so teams can see where calls come from and how they’re handled. Businesses use 800.com to track phone leads across websites, ads, social media, and offline marketing, improve response times, and follow up on missed calls. With integrations for Google Ads, GA4, Meta, Microsoft Ads, and popular CRMs, 800.com connects call data to marketing and sales workflows. The platform is easy to set up, flexible as businesses grow, and designed to turn phone calls into clearer insights and better customer experiences. 2,381 Ratings Visit Website DoorLoop DoorLoop is property management software built for speed and the smart choice for people who take growth seriously. This is property management software that actually keeps up with you. It’s surprisingly simple–a perfect blend of everything you need and nothing you don’t–and modern software that is constantly improving. With DoorLoop, you’ll get real support, real fast from people who care and respond in minutes. Say hello to a team that’s easy to work with and goodbye to the risk and pain of switching. 1,010 Ratings Visit Website
About Everything you need to know to dive into the FreeSWITCH platform. FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device. Combined with our hosted cloud platform, SignalWire, FreeSWITCH can interconnect with the outside world and scale to any size. The Pre-built virtual machine has both a written and video how-to to help you get started. All you need is a copy of virtualbox and you can be off and running in minutes. If you are an experienced developer you can also follow the instructions below to compile the FreeSWITCH platform from source among other manual installation options. If you already have a spare Debian instance handy, you can follow the link below to get detailed instructions on how to get our packages installed.	About Kamailio® (successor of former OpenSER and SER) is an open-source SIP server released under GPLv2+, able to handle thousands of call setups per second. Kamailio can be used to build large platforms for VoIP and real-time communications, presence, WebRTC, Instant messaging, and other applications. Moreover, it can be easily used for scaling up SIP-to-PSTN gateways, PBX systems, or media servers like Asterisk™, FreeSWITCH™, or SEMS. Among the powerful features, are asynchronous TCP, UDP and SCTP, secure communication via TLS for VoIP (voice, video, text); WebSocket support for WebRTC; IPv4 and IPv6; simple instant messaging and presence with embedded XCAP server and MSRP relay; asynchronous operations; IMS extensions for VoLTE; ENUM; DID and least cost routing; load balancing; routing fail-over; accounting, authentication and authorization; support for many backend systems such as MySQL, Postgres, Oracle, Radius, LDAP, Redis, Cassandra, MongoDB, Memcached.
Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Not Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	Platforms Supported Windows Supported Mac Not Supported Linux Not Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Companies in need of a Software Defined Telecom Stack	Audience Companies and professionals in need of a tool to develop secure and extensible SIP servers to improve their VoIP services
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported	API Offers API Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing No information available. Free Version Not Supported Free Trial Not Supported	Pricing No information available. Free Version Not Supported Free Trial Not Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software	Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software

Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information FreeSWITCH Founded: 2005 United States freeswitch.com	Company Information Kamailio Founded: 2001 United States www.kamailio.org/w/
Alternatives Asterisk Sangoma Technologies	Alternatives Asterisk Sangoma Technologies
FusionPBX	FusionPBX
Kamailio	FreeSWITCH
ASTPP	VitalPBX
ICTPBX ICTInnovations View All	VaxVoIP VaxSoft View All
Categories PBX Supported Telephony Supported	Categories PBX Supported Telephony Supported

Integrations 360 Monitoring Not Supported Apache Cassandra Not Supported Asterisk Not Supported DID Logic Supported DIDforSale Supported EcholoN Supported FetchIt Supported FreeSWITCH Not Supported Kamailio Supported LDAP Not Supported MongoDB Not Supported MySQL Not Supported Oki-Toki Supported Oracle Cloud Infrastructure Not Supported Phonism Supported PostgreSQL Not Supported Radius Not Supported Redis Not Supported Telnyx Supported memcached Not Supported Show More Integrations View All 10 Integrations	Integrations 360 Monitoring Supported Apache Cassandra Supported Asterisk Supported DID Logic Not Supported DIDforSale Not Supported EcholoN Not Supported FetchIt Not Supported FreeSWITCH Supported Kamailio Not Supported LDAP Supported MongoDB Supported MySQL Supported Oki-Toki Not Supported Oracle Cloud Infrastructure Supported Phonism Not Supported PostgreSQL Supported Radius Supported Redis Supported Telnyx Not Supported memcached Supported Show More Integrations View All 13 Integrations
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