Mizutech

Name

Mizutech

Legal name

Mizutech S.R.L.

Website

https://mizu-voip.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

VoIP Software Platform

NAICS

Software Publishers (513210), Custom Computer Programming Services (541511)

SIC

Services-Telephone Interconnect Systems (7385), Services-Prepackaged Software (7372)

akta.pro primary industry

VoIP Access & ITSP Services (HDAIAHAD)

akta.pro secondary industry

Voice Calling (VoIP) Apps (BPAMACAC)

Keywords

• VoIP software platform
• SIP softswitch
• WebRTC SIP gateway
• SIP SDK development
• VoIP softphone clients

Headquarters

HQ city

Brasov

HQ country

Romania

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Software Licensing (Perpetual): Mizutech generates primary revenue through perpetual one-time license sales for software products including VoIP server/softswitch, SIP SDKs, softphones, SBC, WebRTC gateway, and other modules. Customers pay upfront for lifetime licenses with no recurring subscription requirements. Pricing varies by product tier and capacity limits.
2. Hosted VoIP Services: Managed cloud VoIP hosting services where Mizutech provides preconfigured, fine-tuned servers with 24/7 monitoring. This represents a managed service recurring revenue model complementing the perpetual software licenses.
3. Professional Development Services: Custom VoIP software development, consulting, and integration services including custom features, scalable architectures, VoIP SDK integration, AI integration, high-load deployments, and CRM integration services.
4. Customized/Branded Softphone Licensing: White-label branded softphone solutions for VoIP service providers and enterprises with unlimited usage licensing, including branding, preconfigured settings, API integration, and customization services starting at $990 with unlimited usage tier at $3,900.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels5 records

Core offering

Mizutech develops and licenses a comprehensive VoIP software portfolio including a carrier-grade SIP softswitch (Mizu SIP Server), cross-platform softphones (Windows, Android, iOS, Symbian), a browser-based WebPhone, and SIP SDKs for Java, Windows, Android, and JavaScript. The company also offers modular add-ons for session border control, WebRTC-SIP gateway conversion, push notifications, AI integration, load balancing, tunneling, and call center functionality. Revenue is generated primarily through perpetual software licensing, with additional managed hosting and custom development services.

Product overview

Mizutech offers a comprehensive VoIP software portfolio consisting of a core softswitch platform (Mizu SIP Server) with modular add-ons and a full range of client applications and SDKs. The server-side includes the softswitch with built-in billing, IVR, call recording, and optional modules for AI (SIP-AI Gateway), security (SIP SBC), WebRTC (WebRTC-SIP Gateway), push notifications (MPUSH), load balancing (MLB), and tunneling. Client applications span web browsers (WebPhone), desktop (Windows Softphone), mobile (Android/iOS/Symbian Softphones), and customized branded builds. Developer SDKs are available for Java, Windows, Android, and JavaScript platforms. The company also provides managed hosting and custom development services.

Differentiator

Problem solved

Functional benefit

Brands

• MizuPhone: Windows softphone application for VoIP calling
• MizuDroid
• Mizuphone
• JVoIP
• MVoIPSDK
• AJVoIP
• MRTC
• MPUSH
• MizuManage

Products and services

• Mizu SIP Server (Softswitch) Carrier-grade VoIP softswitch for Windows combining ease of use with high stability and throughput. Supports up to 8,000 simultaneous calls per instance, with built-in SIP registrar, proxy, SBC, IM, application server, media server, billing, IVR, call recording, and WebRTC stack.
• WebPhone Browser-based SIP client and JavaScript SIP library enabling VoIP calls from any webpage. Features multiple VoIP engines (WebRTC, Java applet, Flash, Native) with automatic engine selection for optimal browser/OS compatibility.
• MizuDroid (Android Softphone) VoIP softphone for Android phones and tablets supporting all SIP servers, with HD audio, G.729/Opus codecs, push notifications, tunneling/encryption, and full business features including call recording and IM/chat.
• Windows Softphone (MizuPhone) Professional SIP softphone for Windows with HD audio, G.729 codec support, VoIP tunneling, NAT traversal, and full feature set including video calls, chat, presence, and call recording. Available in Classic and Modern editions.
• iPhone Softphone VoIP softphone application for iOS devices supporting SIP protocol with HD audio and business features.
• Customized Softphone (All-In-One) Fully branded and customized softphone package covering Windows, Android, iOS, and Symbian platforms with unlimited license. Includes white-label branding, preconfigured server settings, full codec support, and tunneling/encryption options.
• Java SIP SDK (JVoIP) Compact SIP library for Java SE delivered as a single ~2MB JAR file. Supports voice/video calls, chat, conference, presence, HD audio, AI integration (LLM chat, speech-to-speech), and works cross-platform on Windows, Linux, Mac, and any JVM language.
• Windows SIP SDK (MVoIPSDK) SIP client SDK for Windows implemented as an NT service with TCP-based API. Can be used from any framework or language (.NET, C#, C++, Delphi) to add VoIP capabilities to desktop applications.
• Android SIP SDK (AJVoIP) Full SIP library for Android (SDK level 14+) delivered as a single AAR/JAR under 3MB. Includes signaling, media, codecs, push notifications, AI integration, and optimized for minimal battery consumption.
• SIP SBC (Session Border Controller) Session Border Controller for Windows controlling SIP signaling and media streams. Provides security (DoS/DDoS protection, encryption), NAT traversal, codec transcoding, recording, and optional modules for billing, AI, WebRTC, and tunneling.
• SIP-AI Gateway Gateway bridging SIP systems with AI capabilities including real-time speech recognition, conversational AI agents, sentiment analysis, live transcription, and speech-to-speech integration. Works with OpenAI Realtime API, Gemini Live, Deepgram, Azure, Anthropic, and local LLMs.
• WebRTC to SIP Gateway (MRTC)

Quantifiable outcome

• Up to 8,000 simultaneous B2B calls routed per single softswitch instance
• +3 more outcomes

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration16 records

AI capability9 records

Feature7 records

Partnerships

Four partnerships are on record, tiered core.

• Asterisk (and derivatives: FreePBX, PIAF, Elastix)coreTechnology or IntegrationMizutech products are specifically optimized and tested for compatibility with Asterisk and its derivative distributions including FreePBX, PIAF, and Elastix. The WebPhone and other clients are fine-tuned out of the box for Asterisk deployments.
• FreeSWITCHcoreTechnology or IntegrationMizutech VoIP solutions including softphones, WebPhone, and WebRTC-SIP gateway are optimized for interoperability with FreeSWITCH VoIP platform with specific configuration settings and testing.
• Cisco (and hardware PBX systems)coreTechnology or IntegrationMizutech products are compatible with Cisco infrastructure including CUCM and hardware PBX systems, with optimized settings for enterprise Cisco deployments.
• 3CXcoreTechnology or IntegrationMizutech softphones and server products are compatible with 3CX IP-PBX systems, tested for interoperability with 3CX deployments.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• FreeSWITCH: Open-source telephony platform designed for real-time communications, with which Mizutech maintains interoperability and optimized configuration. Both target carriers, contact centers, and developers building VoIP solutions.
• Belledonne Communications (Linphone): Open-source SIP softphone and SDK provider for desktop and mobile platforms. Direct competitor to Mizutech's Android, iOS, and JavaScript softphones and SIP SDKs serving developers and integrators.
• 3CX: IP-PBX and unified communications provider whose systems Mizutech softphones and server products are tested compatible with. Both sell to SMB and enterprise customers seeking SIP-based PBX functionality.
• CounterPath / Alianza: Provider of softphones (Bria) and white-label VoIP client solutions for service providers and enterprises, directly comparable to Mizutech's customized/branded softphone offerings.
• Asterisk (Digium/Sangoma): Open-source VoIP PBX/softswitch platform that Mizutech's products are specifically optimized and tested for. Both serve carriers, ITSPs, and enterprises needing SIP-based telephony infrastructure with similar feature sets (routing, billing, IVR).
• Kamailio (Kamailio.org): Open-source SIP proxy/server that Mizutech's WebRTC-SIP gateway is explicitly compatible with. Both serve carriers and ITSPs needing high-performance SIP routing infrastructure.

Broad incumbents

• Twilio: Cloud communications platform offering CPaaS voice, SIP trunking, and programmable communications APIs. Mizutech markets its WebPhone as a self-hosted Twilio alternative, indicating direct functional overlap in browser-based VoIP and SIP trunking.
• Telnyx: Cloud-native VoIP carrier and communications platform offering SIP trunking, voice APIs, and UCaaS. Competes with Mizutech's softswitch and wholesale platform offerings in the carrier/ITSP segment.
• Cisco (Webex Calling): Enterprise UCaaS and VoIP infrastructure giant (CUCM, Webex Calling) with which Mizutech products maintain interoperability. Represents the broad incumbent competitive context for Mizutech's enterprise/PBX offerings.

Emerging players

• SignalWire: Cloud communications platform built on FreeSWITCH, offering programmable voice, messaging, and video APIs. Competes with Mizutech's SIP-AI Gateway and developer SDKs in the AI-voice and CPaaS space.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/mizutech
• LinkedInlinkedin.com/company/mizutech

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mizutech