1,919 tools
Free tier unknownSoftware & utilities
Ludwig.guru is the public web presence for Ludwig, a linguistic search engine for English that helps writers compare phrasing against a corpus of reliable sources.
Free planSoftware & utilities
LWJGL (Lightweight Java Game Library) is an open-source library that exposes native APIs such as OpenGL, OpenAL, and Vulkan to Java applications. It enables cross-platform game and graphics development with bindings maintained by the LWJGL project.
Free to startSoftware & utilities
LXC is a userspace toolkit for Linux kernel containment features, letting operators create and manage system or application containers through liblxc, CLI tools, and language bindings. It targets environments close to a standard Linux install without a separate guest kernel.
Free tier unknownSoftware & utilities
LXD is Canonical’s system for managing Linux containers and virtual machines with a unified experience for clusters, storage, and networking. Built on Linux containers, it targets low-touch virtual infrastructure from laptops to data-center scale.
Free planSoftware & utilities
Lynis is a mature open-source security auditing tool for Linux, macOS, and Unix systems. It scans configurations and controls to support system hardening, compliance checks, and vulnerability detection, with optional Lynis Enterprise plugins for centralized reporting.
Free planMusic & audio
Lyrion Music Server (LMS) is the community-maintained streaming music platform formerly known as Logitech Media Server, providing library management, player support, plugins, and documentation for self-hosted multi-room audio.
Free planSoftware & utilities
Mafl is a free, open-source homepage dashboard for organizing self-hosted services with YAML configuration, themed layouts, grouped cards, tags, PWA install support, and Docker-ready images.
Free planSoftware & utilities
MagicBell is a multichannel notification service for web and mobile apps. One REST API and SDKs route messages to email, mobile push, web push, Slack, and SMS with built-in user preferences, delivery logs, and channel-level observability.
Free tier unknownSoftware & utilities
MagicBrief was a video ad workflow platform for launching and analyzing creative campaigns. The site now announces a shutdown on July 31, 2026, with billing cancelled and guidance to migrate functionality to Canva Grow.
Free tier unknownSoftware & utilities
Magic Leap develops see-through augmented reality optics and waveguide technologies for enterprise AR solutions. The public site focuses on optical engineering, manufacturing, and design services rather than a self-serve software subscription.
Free to startSoftware & utilities
MaglevCMS is a visual page builder for Ruby on Rails that lets non-technical users assemble marketing pages from reusable sections while developers retain control in Rails apps. A SaaS edition targets multi-tenant platforms that need in-app page editing.
Free planSoftware & utilities
Mailbird is a desktop email client for Windows and macOS that unifies Gmail, Outlook, Yahoo, iCloud, Exchange, and other IMAP accounts in one workspace. The site highlights unified inboxes, templates, tracking, rules, and integrations so professionals can manage multiple providers without constant browser switching.
Free to startSoftware & utilities
MailCatcher runs a simple local SMTP server that captures outbound mail and displays it in a web inbox for development and QA. It shows HTML, plain text, and source views, supports attachments, and integrates with frameworks via SMTP or catchmail.
Free planSoftware & utilities
mailcow: dockerized is an open-source, Docker-based groupware and email suite that combines Postfix, Dovecot, Rspamd, SOGo webmail, ClamAV, and a graphical mailcow UI for administering domains, mailboxes, TLS policies, and anti-abuse settings.
Free tier unknownSoftware & utilities
Mailead is a cold email outreach platform with one-time lifetime packages for sending, warmup, unified inbox, A/B tests, forms, and LinkedIn scraping credits. Tiers scale monthly send volume, uploaded contacts, and teammate seats for founders running outbound without recurring SaaS billing.
Free to startSoftware & utilities
MailerSend is a transactional email platform with SMTP relay, email API, inbound routing, SMS, and drag-and-drop template tooling. It focuses on developers and product teams delivering notifications, receipts, and lifecycle messages with deliverability tooling.
Free planSoftware & utilities
Mail-in-a-Box turns a cloud Ubuntu server into a personal mail stack with webmail, IMAP/SMTP, contacts, calendars, spam filtering, automated DNS and TLS, and backups so individuals can operate their own email domain.
Free trialSoftware & utilities
Mailivery is an email warm-up and deliverability suite that connects unlimited mailboxes while sharing daily warm-up volume across Starter, Professional, and Business plans. Every tier bundles blacklist monitoring, verification credits, inbox placement tests, and supporting deliverability tools with a seven-day trial.
Free tier unknownSoftware & utilities
Mail Rocket is a Gmail mail-merge add-on that sends personalized mass emails from Google Sheets while respecting Gmail sending limits. Premium plans unlock tracking, scheduled campaigns, personalized attachments, unsubscribe handling, and priority support for Workspace and personal Gmail accounts.
Free planSoftware & utilities
mail-tester.com provides email deliverability testing that scores newsletters and transactional messages for spam signals. The site offers free spam tests plus DNS and authentication utilities such as SPF, DKIM, DMARC, and BIMI checkers for senders improving inbox placement.
Free planSoftware & utilities
MailTester Ninja is an email checker and verifier that validates addresses in real time without sending mail, aiming to cut bounces and protect sender reputation. The site stresses that checks store nothing and offers related deliverability tools plus API access for higher volumes.
Free planSoftware & utilities
MailTime is a mobile email client that presents messages as chat-style conversation bubbles instead of traditional threads. It aggregates Gmail, Outlook, Yahoo, iCloud, and other accounts in one app while keeping outbound messages compatible with standard email clients.
Free tier unknownSoftware & utilities
Mailwarm is an email warm-up service that sends positive engagement signals from real inboxes to improve sender reputation and inbox placement. It supports Gmail, Outlook, Yahoo, Zoho, SMTP providers, and includes deliverability expert guidance on every plan.
Free tier unknownSoftware & utilities
Malga is a Brazilian embedded payments orchestration platform that lets digital platforms connect acquirers, antifraud tools, wallets, and payment methods without rigid legacy integrations. Teams use Malga to route transactions, swap providers, and improve approval rates while keeping compliance and operational control.
Showing 1,176 of 1,919 tools
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