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No free planVoice
The Ultravox developer docs (Fixie successor) cover agents, calls, telephony, tools, voices, WebSockets, and API references for building on Ultravox voice AI. It is the official documentation hub linked from the Ultravox product site for integration and deployment guides.
Free planResearch
Ultravox (Fixie.ai) provides speech-native voice AI with developer APIs for real-time conversational agents, running a proprietary speech model on dedicated infrastructure instead of traditional speech-to-text pipelines.
Free to startAssistant
Fixiol turns drone roof inspection photos into insurance-ready reports with weather verification, measurements, damage detection, estimate cross-checks, and client-shareable PDF workflows for roofing and inspection businesses.
Free tier unknownWriting
Fixkey is a native macOS writing assistant that rewrites or translates highlighted text in any app, adds real-time speech-to-text in 180+ languages, custom prompts, and dictionary words for faster polished writing.
Free planWriting
FixMeBot is a writing assistant available as a Chrome extension and Telegram bot, offering ten tools—including grammar fixes, paraphrasing, translation in 90+ languages, social replies, Magic Mode, and voice-to-text—metered by character allowances.
Free tier unknownImages
FixPix is desktop image AI software for hands-on editing on your own files. The site highlights generative instructions, inpainting and outpainting, background removal, style transfer, colorization, collages, and restoration without advertising usage caps or recurring subscription fees.
Free to startAI maintenance triage
fixRAgent helps property managers triage resident maintenance photos into a likely issue, urgency, appropriate trade and work-order details. Reports can feed a review queue, resident email or connected software, and an AI assistant can access the same triage capability through a connector.
Free to startAssistant
Fixture is an AI-first CRM for startups that aggregates customer interactions into a unified activity graph, suggests next actions, and exposes APIs plus MCP so humans and agents can program the system. It captures email, calendar, Slack, and meeting context into deals and contacts automatically.
Free tier unknownAssistant
Flagright is an AI-native financial crime compliance platform with transaction monitoring, dynamic risk scoring, watchlist screening, case management, regulatory filing, and specialized AI Forensics agents for AML teams.
Free planCode
Flagsmith is an open-source feature flag and remote config service for releasing software safely. Teams can self-host or use Flagsmith Cloud with tiered API call limits, experimentation tools, and enterprise governance features as they grow past the free allocation.
Free trialCode
Flai delivers AI classification and vectorization for 3D point clouds across aerial, mobile, indoor, utility, forestry, and defense workflows via FlaiCortex on-prem licensing or a managed cloud with pay-when-you-download processing.
Free planCode
FlaiChat is a multilingual group chat app that auto-translates messages in 40+ languages, adds optional AI voice cloning so contacts hear your voice in their language, and includes tasks, an AI bot, and daily moment sharing.
Free planImages
Flair.ai is a drag-and-drop AI design tool for e-commerce product photography and marketing visuals. Teams stage digital scenes, mix templates, generate on-brand product shots, and produce model photography and short product videos from the browser.
Free planAssistant
Flakes is a free-to-download, keyboard-first AI browser for macOS with Vim-style navigation, a command palette, focus mode, optional Drift AI that reads open tabs, and native SwiftUI performance.
Free planAssistant
flaky is a free mock REST API with realistic sample data where you control failure behavior from the query string. You can force status codes, inject latency, set intermittent fail rates, and run scripted success or failure sequences to test retries, loading states, and circuit breakers without touching production services.
Free tier unknownAssistant
Flame Analytics provides AI video analytics for physical spaces, measuring foot traffic, customer journeys, occupancy, queues, and WiFi marketing data for retail, malls, hotels, banking, and public venues.
Free tier unknownAssistant
Flamel is an AI-powered marketing hub built for multi-location brands and franchises. It connects organic social, Meta and Google ads, Google Business listings, reviews, email and SMS, blogs, NPS surveys, and file management so corporate and local teams run campaigns from one platform with brand guardrails.
Free tier unknownAssistant
Flamingo is a college and career readiness platform for schools that helps students build holistic long-term plans across academics, activities, testing, and majors. It adds AI recommendations, an essay lab with expert-informed feedback, college search and matching, and application tracking for counselors and students.
Free planAssistant
Flamme AI is a free browser-based relationship coach from Flamme that answers dating and partnership questions in plain language. It draws on relationship research sources named on the site, supports solo or duo advice modes, and is available 24/7 without signup to start.
Free tier unknownAssistant
Flapico is a small technology lab specializing in AI and infrastructure products for the web. The company site describes a build-first philosophy, links to products such as plym.io and Laconic, and publishes a newsroom and graveyard of past experiments.
Free to startImages
Flaq AI provides unified API access to image, video, music, 3D, and LLM models for production workflows. The site markets model-specific endpoints, free browser tools, documentation, and a billing area where users add prepaid credit packages rather than traditional monthly seats.
Free to startVideo
Flarecut is an AI video generator focused on vertical shorts for TikTok, Reels, and YouTube Shorts. Users start from scripts, prompts, or product ideas to produce voiced, captioned videos with presets for storytelling, UGC, avatars, gameplay, and meme formats.
Free tier unknownAssistant
FlareLane is a CRM marketing automation platform for designing customer journeys across push, SMS, email, and in-app channels. The vendor promotes scenario campaigns, an AI agent for analysis and execution, and enterprise-scale messaging throughput.
Free planAssistant
FlareWarden is a website monitoring service for agencies and freelancers that auto-detects SSL, DNS, dependency, and content checks from a single URL. Cross-region verification is designed to reduce false alarms, and plans include email alerts plus hosted status pages from a free tier through agency-scale monitor counts.
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