VG
VENTUREGAPS

ALL TOOLS

293 curated software tools across 21 categories. No marketing hype. Just the facts.

ALLOpen SourceProject ManagementCRMEmail MarketingDesignDeveloper ToolsAnalyticsCommunicationCloud StorageAccountingHR & RecruitingSecurityAI & Machine LearningE-commerceCustomer SupportMarketing AutomationSocial MediaVideoVPN & PrivacyWeb HostingNo-Code
ALLFREEFREEMIUMPAIDOPEN SRCENTERPRISE
SORT:NEWESTTOP RATEDA-ZPRICE ↑MOST REVIEWED
■ YOUR SAAS / TOOL / SOFTWARE HEREGET LISTED →
E

Elgg

OPEN SRC

Build, connect, and engage with your own social network.

ADEQUATE
F

Flexisip

OPEN SRC

Complete, modular and scalable SIP server, includes a push gateway, to deliver SIP incoming calls or text messages on mobile device platforms where push notifications are required to receive information when the app is not active in the foreground

ADEQUATE
R

Routr

OPEN SRC

Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.

ADEQUATE
T

The Lounge

OPEN SRC

Host and control your own modern web IRC client.

ADEQUATE
Q

Quassel IRC

OPEN SRC

Distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core.

ADEQUATE
F

Freepbx

OPEN SRC

Web-based open source GUI that controls and manages Asterisk

APPROVED
W

Wazo

OPEN SRC

Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API

ADEQUATE
Y

Yeti-Switch

OPEN SRC

Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API.

ADEQUATE
U

UnrealIRCd

OPEN SRC

Modular, advanced and highly configurable IRC server written in C for Linux, BSD, Windows, and macOS

ADEQUATE
F

FreeSWITCH

OPEN SRC

Scalable open source cross-platform telephony platform

APPROVED
A

Asterisk

OPEN SRC

Easy to use but advanced IP PBX system, VoIP gateway and conference server

APPROVED
N

ngircd

OPEN SRC

Portable and lightweight Internet Relay Chat server for small or private networks

ADEQUATE
A

Akkoma

OPEN SRC

Federated microblogging server with Mastodon, GNU social, and ActivityPub compatibility

ADEQUATE
S

SIPCAPTURE Homer

OPEN SRC

Monitor, troubleshoot, and analyze every VoIP call with clarity.

ADEQUATE
S

SIP3

OPEN SRC

See, solve, and secure every VoIP call.

ADEQUATE
F

FusionPBX

OPEN SRC

Web interface for multi-platform voice switch called FreeSWITCH

ADEQUATE
R

Robust IRC

OPEN SRC

IRC without netsplits. Distributed IRC server, based on RobustSession protocol

ADEQUATE
O

openSIPS

OPEN SRC

SIP proxy/server for voice, video, IM, presence and any other SIP extensions

APPROVED
A

Answer

OPEN SRC

Knowledge-based community software. You can use it to quickly build your Q&A community for product technical support, customer support, user communication, and more

ADEQUATE
W

Weechat

OPEN SRC

Fast light and extensible IRC client for the terminal

ADEQUATE
K

Kamailio

OPEN SRC

The modular SIP server for building scalable VoIP and real-time communication platforms.

APPROVED
H

HyperKitty

OPEN SRC

Browse, search, and participate in GNU Mailman 3 web archives

ADEQUATE
E

EmailRelay

OPEN SRC

A small and easy to configure SMTP and POP3 server for Windows and Linux.

ADEQUATE
H

Haraka

OPEN SRC

Fast, highly extensible, and event driven SMTP server

ADEQUATE

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HOW WE REVIEW SOFTWARE

Every tool in the VentureGaps directory is evaluated through comprehensive research, verified user feedback, and data-driven analysis. We assess pricing transparency, feature depth, user satisfaction, and integration capabilities. Our ratings reflect real-world usage patterns and publicly available data — not paid placements. The directory is continuously updated to reflect the latest changes in pricing, features, and market positioning.

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