Output Messenger

What Output Messenger does

Output Messenger is a self-hosted, cross-platform enterprise team communication software developed and operated by Srimax Software System Private Limited, an Indian private limited company founded in 2002 and headquartered in Sivakasi, India. The platform provides instant messaging, group chats, voice/video calls, video conferencing, file sharing, tasks, calendar, and meeting capabilities across Windows, Mac, Linux, Android, iOS, and browser clients. Its defining architectural choice is on-premises server deployment with optional server-less LAN mode, combined with SSL/TLS and AES-256 encryption, two-factor authentication, OTR messaging, and HIPAA/GDPR-aligned controls, positioning the product for security-sensitive and regulated buyers including government, healthcare, banking, military, and education customers.

The company operates on a one-time payment, lifetime named-user license model with a free 3-user tier and a 30-day trial, supplemented by an optional recurring maintenance plan for technical support and upgrades. Its go-to-market is product-led and self-serve: customers download directly from the company website, mobile app stores, or evaluate through third-party review platforms such as FinancesOnline, G2, TrustRadius, and CNET. Output Messenger is part of a broader Srimax product suite that includes Output Desk (helpdesk/CRM), Output Time (project/time management), Output Books (accounting), and Output Wall (employee social network), giving the company an ecosystem expansion path beyond core messaging.

The platform serves an installed base of over 7,500 companies across diverse geographies and verticals. Recent strategic activity has centered on product velocity (V2.0.71 in October 2025, V3.0.1 in June 2026), AI feature introduction (OBO Chatbot, AI Meet Assistants), and proactive security engagement with the Microsoft Security Response Center for coordinated CVE disclosure. The company is bootstrapped, with no disclosed external funding, limited public leadership visibility (only Co-Founder & Marketing contact Mr. S. Kannan publicly identified), and operates from a single India-based headquarters, signaling a small, privately funded, niche-focused operator rather than a venture-backed growth-stage competitor.

Name

Output Messenger

Legal name

Srimax Software System Private Limited

Website

https://outputmessenger.com

Company type

Private

Founded year

2002

Operating status

Operating

Short description

Output Messenger, developed by India's Srimax Software System, is a self-hosted on-premises team communication platform offering secure instant messaging, voice/video calls, file sharing, and collaboration tools for SMBs and regulated enterprises across 7,500+ organizations worldwide.

Ownership category

akta.pro rank

Product category

Enterprise Team Communication Software

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Communications Services, Nec (4899)

akta.pro primary industry

Team Messaging & Chat (BPAMAMAA)

akta.pro secondary industries

Enterprise/Team Messaging (BPAMACAB), Business Messaging & Team Collaboration (HDAIAHAE), Collaboration Security for Chat & Messaging (Teams/Slack) (HDADAKAF)

Keywords

• Office chat software
• Team messaging platform
• On-premise communication
• Instant messaging software
• Enterprise team collaboration

Headquarters

HQ city

Sivakasi

HQ country

India

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. One-Time License Fee: One-time payment for lifetime license. Named User licensing where specific individuals are authorized to access the Software and total named users may not exceed licensed count. License key issued upon payment provides permanent registration.
2. Maintenance Plan: Optional time-limited right to technical support and software updates and upgrades. Technical support covers issues or questions resulting directly out of operation of the Software.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

Output Messenger is a cross-platform, self-hosted team communication and instant messaging platform designed for offices and remote teams. It delivers instant messaging, group chats and rooms, voice and video calls, video conferencing with screen sharing, secure file transfer, an Output Drive file repository, tasks, calendar, meetings, leave management, internal mail, polls, sticky notes, and AI assistants, all running on an on-premise server with SSL/TLS and AES-256 encryption and Active Directory integration. Customers buy a one-time named-user lifetime license with a free 3-user tier and can add an optional recurring maintenance plan for technical support and updates.

Product overview

Output Messenger is a unified enterprise communication platform that serves as the core product, complemented by integrated add-on modules including Output Desk (helpdesk ticketing/CRM), Output Time (project/time management), Output Books (invoicing/accounting), and Output Wall (private social network). The platform operates on a one-time payment, lifetime license model with 3 users free, and is deployed on-premises for full data control. It supports Windows, Linux, Mac, Android, iOS, and web browsers with features spanning instant messaging, voice/video calls, file sharing, tasks, calendar, meetings, and enterprise integrations like Active Directory and GitHub.

Differentiator

Problem solved

Functional benefit

Brands

• Output Time: Project Management and Time Management tool
• Output Desk
• Output Books
• Output Wall
• Output Drive

Products and services

• Output Messenger Cross-platform on-premise team communication platform for offices and remote teams, providing instant messaging, group chats and rooms, voice and video calls, video conferencing with remote desktop sharing, file transfer, Output Drive file sharing, tasks and to-do lists, meetings and calendar, leave management, internal mail, polls, sticky notes, and push notifications, with SSL/TLS and AES-256 encryption, Active Directory integration, and HIPAA-aligned compliance features.
• Output Desk

Quantifiable outcome

• 7500+ companies worldwide using the platform

Named customers5 records

Segments10 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

AI capability4 records

Feature10 records

Partnerships

Six partnerships are on record, tiered core and minor.

• Google CalendarcoreTechnology or IntegrationOutput Messenger integrates with Google Calendar through iCal export/import functionality, allowing users to sync calendars for better scheduling and event management within the messenger platform.
• Active Directory / LDAPcoreTechnology or IntegrationIntegration with enterprise directory services for user management. Supports LDAP protocol for importing and managing users from global directory. Enables Auto Import of non-existing users on login from Active Directory.
• Output DeskcoreStrategic or Co-development PartnerOutput Desk is a live chat/ticketing software by the same company (Srimax) that integrates with Output Messenger. Enables customer support ticketing, live chat, email support, canned responses, and chat routing directly within Output Messenger.
• Output TimeminorStrategic or Co-development PartnerProject Management and Time Management tool from the same Srimax product family that integrates with Output Messenger for enhanced productivity workflow.
• Output BooksminorStrategic or Co-development PartnerInvoicing, Inventory & Accounting software from Srimax product ecosystem. Part of the integrated business software suite.
• Microsoft Security Response CentercoreTechnology or IntegrationMicrosoft Security Response Center identified and responsibly disclosed CVE-2025-27920 (Directory Traversal Vulnerability) and CVE-2025-27921 (XSS Vulnerability) in Output Messenger, demonstrating security collaboration.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Element (Matrix): Element is the flagship client for the open-source Matrix protocol, offering end-to-end encrypted team messaging with self-hosting options. It is a direct peer given Output Messenger's shared focus on encrypted messaging, OTR-style privacy, and self-hosted deployment for security-sensitive buyers.
• Wickr (AWS): Wickr (now part of AWS) provides end-to-end encrypted messaging for enterprises, government, and defense customers. It overlaps with Output Messenger's security-first, regulated-vertical positioning and self-hosted messaging capabilities.
• Wire: Wire provides end-to-end encrypted team messaging, voice, and video with on-premise deployment options for enterprises and governments. It is comparable to Output Messenger on security-first positioning, regulated-vertical focus, and self-hosted collaboration.
• Mattermost: Mattermost offers a self-hosted, open-source team messaging platform focused on enterprise, government, and defense customers requiring data sovereignty. It closely mirrors Output Messenger's on-premise value proposition, security framing, and integration with DevOps/IT workflows.
• Rocket.Chat: Rocket.Chat is a self-hostable, open-source team messaging and collaboration platform targeting enterprises and governments. It is directly comparable to Output Messenger on deployment model (on-premise/air-gapped), security positioning, and target verticals including defense and regulated industries.
• Zulip: Zulip is an open-source threaded team chat platform with self-hosting and cloud options, used by enterprises and research organizations. It is comparable to Output Messenger in offering structured team messaging, self-hosted deployment, and productivity features for distributed teams.
• Brosix: Brosix is a self-hosted, security-focused team messaging and collaboration platform for SMBs and enterprises. It closely parallels Output Messenger's on-premise architecture, lifetime/perpetual licensing model, and emphasis on private communication for regulated industries.

Broad incumbents

• Slack: Slack (now Salesforce) is the dominant cloud-based team messaging platform widely adopted across enterprises. It is a broad incumbent offering overlapping functionality to Output Messenger, though focused on SaaS delivery rather than on-premise.
• Microsoft Teams: Microsoft Teams is the leading enterprise collaboration suite bundled with Microsoft 365. It competes broadly with Output Messenger across messaging, voice/video, and file sharing, but is cloud-first and part of a much larger productivity ecosystem.

Emerging players

• Flock: Flock is a team messaging and collaboration platform for SMBs with integrated productivity tools. It is an emerging player with partial overlap to Output Messenger's SMB/mid-market instant messaging focus, though primarily cloud-delivered.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/lanmessenger
• Facebookfacebook.com/outputmessenger
• LinkedInlinkedin.com/company/srimax

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries4 records

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 Output Messenger