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Free planPersonal Assistants
LowLighter is a hotkey-operated AI overlay for macOS and Windows. It offers answer and summarization modes alongside meeting assistance and, on higher plans, agent computer use. Users can request help from selected on-screen context without moving the main working window.
Free planAssistant
Users can try tools immediately, create custom tools, and share links with zero-friction access.
Free trialResearch
LPagery AI Rank Tracker monitors how businesses appear in ChatGPT, Gemini, Claude, Perplexity, and other AI search surfaces. It tracks keywords, competitor mentions, share of voice, and step-by-step fixes to improve AI visibility.
Free tier unknownImages
LS.GRAPHICS sells high-end device mockups, animated scenes, illustrations, and online mockup editing for UI and graphic designers. Subscribers get browser-based PNG/JPG exports plus optional Pro downloads for PSD, Sketch, and Figma source files.
Free tier unknownDeveloper tools
Lua is an Agent OS for building and running enterprise-grade AI agents in one governed workspace. Developers write TypeScript tools with the Lua CLI, while others compose agents in a no-code builder, deploying to channels such as chat, SMS, voice, and WhatsApp.
Free planAssistant
LubeLogger is a self-hosted, open-source vehicle maintenance tracker for recording service history, fuel economy, reminders, supplies, and documents, with dashboards, planners, and optional API and SSO integrations.
Free trialAssistant
LUCA is an intelligent reading specialist for K-12 learners that combines phoneme-level speech recognition, StoryGen personalized stories, and adaptive learning paths. It targets families, tutors, and school programs needing structured literacy intervention.
Free tier unknownFinance
Luca IQ is professional tax software built exclusively for CPA firms, covering client intake, workpaper preparation, tax engine calculations, e-signatures, and IRS e-filing in one workflow. It also exposes a developer-facing tax engine API for firms building modern tax products.
Free to startSearch Library
Apache Lucene.NET is an open source C# port of the Lucene search library for .NET runtimes. It provides indexing, analyzers, and query APIs for full-text search in applications, with broad .NET Standard and .NET Framework support and thousands of passing unit tests.
Free trialCode
Lucent analyzes session replays from PostHog, Amplitude, Datadog, Sentry, or its own SDK to automatically surface bugs, UX friction, affected users, and product insights. It targets teams who want AI review of real user sessions instead of manual replay watching.
Free tier unknownAssistant
Lucid Beads lets shoppers design personalized natural gemstone bracelets in live 3D with intention-based prompts or freestyle bead selection. The storefront adds ChatGPT-assisted bracelet creation, community remixes, and made-to-order jewelry shipped from the United States.
Free planCode
Lucid Forms is a form-to-email backend for static, AI-built, and no-code sites. It collects submissions, delivers notifications to email or Google Sheets, blocks spam, and exposes webhooks and integrations so teams can add contact forms without running their own servers.
Free planAssistant
Lucida AI is a mobile AI language tutor focused on spoken practice with real-time pronunciation, grammar, and fluency feedback. The web presence drives app downloads and explains subscription-gated premium features inside iOS and Android apps.
Free to startPresentations
Lucidchart is Lucid Software’s intelligent diagramming application for flowcharts, system maps, and process documentation. The product combines drag-and-drop editing with data-linked diagrams, automation, and AI-assisted diagramming within the broader Lucid platform.
Free tier unknownImages
Lucidic AI researches how large language models learn and applies co-training techniques to custom models and agent harnesses on customer data. The site targets teams building production agents that need jointly optimized prompts, tools, and weights.
Free tier unknownAssistant
Lucidya is an AI-native customer experience management platform for listening, profiling, AI agents, surveys, and media monitoring across Arabic and global markets. It unifies social listening, omni-channel support, and executive reporting for enterprise CX teams.
Free tier unknownObservability
Luciq (formerly Instabug) is a mobile-first observability platform that consolidates crashes, performance, engagement funnels, and user sentiment into agent-ready context. It targets mobile engineering and product teams with Companion debugging, Autopilot remediation workflows, and signals tuned for iOS and Android production apps.
Free tier unknownAssistant
Lucis is a health companion membership that combines lab testing, wearable context, and personalized action plans across 110+ biomarkers and 11 body systems. Members get partner-lab testing in Europe, dashboards, and ongoing guidance to improve long-term health outcomes.
Free planVideo
LuDe (Luminous Decibels) is a beta web app that builds short lyrical videos for YouTube Shorts or Instagram Reels from audio or transcripts. Users attach audio, edit an auto transcript, pick backgrounds, and run a Luminate step before download.
Free to startAssistant
Ludo.ai is an AI game development platform for sprites, icons, UI, textures, music, 3D assets, and prototypes from one workspace. Paid plans add credit pools plus API, MCP, CLI, and Unity plugin access for production pipelines.
Free tier unknownWriting
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 tier unknownData
Luel is a multimodal data lab focused on machine perception foundations. The site describes a proprietary continuous data engine for training systems that listen, reason, and act, with public paths to contribute data, browse datasets, and request custom datasets through its marketplace and Speech Lab.
Free to startMeetings
Lugs.ai captions and transcribes microphone and system audio locally on macOS without cloud streaming. It targets people who are hard of hearing and promises best-in-class live captions with lifetime updates on a one-time license.
Free to startVideo
Luma provides creative agents and generative models for image and video production, including Dream Machine-era video tools now within the broader Luma app. Teams plan, generate, and refine multimodal creative work with shared context and credit-based plans.
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