Invideo Ai, Seals Digital, Stampdy, Muse Image Run, Muse Video, Deep Song, Claude Certified Architect, Chair Tai Chi, Taichi Walk, Human Design Chart, is the best paid/free 2026-07tools.

InVideo AI is a multimodal creation workspace integrating 250+ AI models, unifying AI video generation, image creation, voice synthesis, music production, and virtual human tools on the single platform invideoai.ai. Users can generate videos from text or images, perform image enhancement, background removal, face swapping, video extension, lip-syncing, and voice conversations, covering top-tier models such as Nano Banana, Seedance, Sora 2, Veo 3.1, Kling, Midjourney, Flux, and ElevenLabs. It offers a free starter plan (300 permanent credits + 5 daily login bonus credits), monthly/annual subscriptions ($13–15/month), and one-time credit packs ($20 for 1,000 credits, never expiring). Supports 4K image and HD video output, with all generated content including commercial licensing.

SealDigital is an AI-driven online seal design platform offering professional-grade seal generation at the industry's lowest price of $2.4. Users can complete the entire process from template selection to export in just 5 seconds via a browser, with no design experience required. The platform supports synchronous export in 4 formats (PNG, SVG, PDF, DOCX), featuring built-in AI smart layout recommendations, automatic text typesetting, real-time contrast checks, aging effects, and anti-counterfeit serrated edges as advanced security functions. It covers 6 major industry scenarios: corporate seals, legal notarization, wedding events, educational institutions, healthcare, and more. All exported files are watermark-free and come with permanent commercial usage rights. Already serving 50,000+ seal creations, it has been recommended by Product Hunt, Wired Business, Twelve Tools, and other platforms.

StampDy is a free online stamp design tool that allows you to create professional-grade stamps quickly in your browser without registration. It supports various shapes including circular, rectangular, oval, triangular, and square. You can add custom text (including circular text), upload logos/icons, adjust font styles/size/spacing/rotation/alignment, and apply aging effects to simulate real rubber stamp textures. Export formats include PNG, SVG, EPS, PDF, and DOCX, with support for 1x/3x/10x multi-resolution exports and transparent backgrounds. The platform also offers an AI stamp generator, a PDF editor (supporting stamp insertion and e-signatures), and e-signature request features (featuring SHA-256 hashing, audit trails, and completion certificates). Flexible pricing plans include $2.4 per single use, $15.9/month unlimited, $119/year, and $299 lifetime access, catering to all scenarios from occasional personal use to high-frequency enterprise needs.

Muse Image is an aesthetics-first AI image generator dedicated to transforming text prompts and visual references into high-aesthetic, photorealistic artworks. Unlike general-purpose AI generators, Muse Image is fundamentally optimized for aesthetic output from the ground up, featuring built-in style references, moodboards, and creativity controls. It supports five aspect ratios (1:1, 3:4, 9:16, 4:3, 16:9) and offers three model tiers: Medium Turbo (fast drafts), Medium (standard), and Large (high-detail final). New users receive 50 free credits upon registration. The pricing model uses one-time credit packs (no subscriptions, no recurring bills), with credits that never expire. It is ideal for portraits, environments, concept art, and brand product visuals requiring precise style control.

Muse Video is a free AI video generator that supports text-to-video and image-to-video, with native audio integration and AI lip-sync. Users can turn ideas into cinematic 4K videos in seconds, supporting aspect ratios including 9:16, 1:1, and 16:9. Core features include text/image/video-to-video conversion, AI lip-sync, motion brush, camera control, style transfer, 4K upscaling, frame interpolation, and AI voiceover. Three model options are available—Muse Video, Muse Video Pro, and Muse Video Turbo—to meet varying needs for speed and quality. All generated content comes with full commercial usage rights, suitable for advertising, social media, e-commerce product showcases, educational content, and film pre-visualization. Register to receive 50 free credits, with flexible monthly or annual plans (save up to 50%), starting at just $0.23 per video.

DeepSong.ai is a free AI song generator that allows users to turn ideas into professional-grade songs in 30-120 seconds without any music experience. It supports Simple Mode (text description) and Custom Mode (full lyrics, title, style tags), offering model versions from V1.0 to V4.0, with options for female, male, or random vocals across 25+ genres including Pop, Rock, Jazz, Electronic, and more. Generated songs are available for download in MP3/WAV/FLAC lossless formats with full commercial licensing rights, suitable for YouTube, ads, podcasts, game soundtracks, and film scores. The community has generated over 1 million songs, serving 50,000+ creators with a 99% satisfaction rate. Flexible monthly/yearly subscription plans are available (save 20% on yearly), with unused credits rolling over.

Claude Certified Architect is an independent preparation platform for the Claude Certified Architect exam (CCA-F), building a complete learning system around the official 5-domain blueprint. The platform offers structured courses aligned with the official blueprint, a 120-minute full-length mock exam with 60 questions, Leitner spaced-repetition flashcards, free domain-specific study guides and diagnostic tests, and supports five languages: English, Japanese, Korean, Brazilian Portuguese, and Simplified Chinese. It covers five core domains: Agentic Architecture & Orchestration (27%), Tool Design & MCP Integration (18%), Claude Code Workflows (20%), Prompt Engineering & Structured Output (20%), and Context Management & Reliability (15%), providing a clear path from blueprint learning to certification.

ChairTaiChi.org is a free comprehensive resource hub for seniors, beginners, and individuals with limited mobility, offering seated tai chi exercise programs supported by evidence-based medicine. The website provides a free 4-week video course (with screen-friendly instructor step-by-step guidance), 1-6 minute mini training modules, a complete move library (such as Yun Shou, Ye Ma Fen Zong, Lou Xi Nao Bu, etc.), senior-specific safety guides, and printable male/female training schedules (A4/US Letter PDF + high-resolution JPG). All exercises require only a stable chair, no special equipment, and can improve flexibility, balance, lower blood pressure, and relieve pain in just 10-15 minutes per day. Content references clinical research data from authoritative institutions such as JAMA, NEJM, Harvard Health, CDC STEADI, and NHS, and has been officially recommended by the Arthritis Foundation.

Tai Chi Walking Guide is a free Tai Chi walking guide website for adults aged 45 and over, seniors, beginners, and caregivers. No login or payment required; all content is accessible directly in your browser with progress saved locally on your device. The site offers an interactive voice coach (including metronome, senior slow mode, and chair-assist prompts), a 7-day free progressive course (from standing weight transfer to continuous slow walking), printable practice cards, instructional videos, and detailed safety guidelines. Content is evidence-based, citing authoritative sources like NIH NCCIH and Harvard Health, emphasizing safety first, with all health claims accompanied by cautious language and never overstating benefits.

HumanDesignChart.org is a free online Human Design calculation tool that combines the I Ching, astrology, Kabbalah Tree of Life, chakra systems, and quantum physics to provide precise ephemeris-level birth chart analysis. Simply enter your date of birth, time, and location to instantly generate an interactive SVG bodygraph in your browser containing energy types (Generator/Projector/Manifestor/Manifesting Generator/Reflector), decision strategies and inner authority, life profile (Profile), all nine energy centers, 64 gates, 36 channels, and variables (Variables). All calculations are performed locally in the browser: 100% free, no registration required, no personal data stored. Supports dual-person relationship chart comparison, serving 10,000+ users with precision up to 1-second ephemeris data.

Fahhh.me is a one-stop meme culture hub built around the viral 'Fahhh' sound effect created by Taileons, integrating four core modules: a soundboard, a meme generator, a gallery, and a trending video section. The platform hosts 13+ authentic sound clips (including original, 7x layered, extended versions, etc.), supporting keyboard shortcuts, volume control, tag filtering, and instant playback. The meme generator offers YouTube and Imgflip templates, canvas editing, and one-click export. The gallery aggregates assets from KnowYourMeme and YouTube with source attribution. The video module sorts content by popularity, recency, and view count. With over 5 million plays, it covers the complete cultural timeline from the creator's origin in 2024 to the meme's canonization in 2026, serving as the ultimate Fahhh resource for streamers, Discord communities, and content creators.

Loop Engineering is an intelligent operations system designed for AI SaaS teams, transforming product feedback into an auditable and verifiable continuous improvement loop. Unlike single-prompt tools, Loop Engineering builds a complete Agent engineering control framework: it automatically discovers and categorizes issues through signal inputs (supporting 6 major sources such as tickets, CLI feedback, error logs, user research, search queries, etc.), executes code changes in isolated workspaces (Worktrees), and subjects them to independent verification via a Verifier for build validation, type checking, visual QA, security scanning, SEO auditing, and smoke testing. Finally, decisions, blockers, and evidence are written to the memory system for reuse in subsequent runs. It supports multi-Agent coordination across Claude Code, Codex, Cursor, Windsurf, Gemini CLI, and more, covering the full spectrum from second-level coding loops to hour-level development feedback and week-level external feedback. This empowers product managers, growth teams, support teams, and engineering leads to make decisions based on evidence rather than guesswork.

AI Toolbox is a browser-based, free online video splitting tool that supports mainstream formats including MP4, WebM, MOV, MKV, and AVI. It requires no file uploads, no registration, and adds no watermarks. All processing is performed locally using FFmpeg compiled via WebAssembly, ensuring 100% privacy and security. It offers four splitting methods: manual precise splitting with timeline preview, equal portion splitting, duration-based splitting, and file size-based splitting. It also supports Fast Mode for stream copying (ultra-fast splitting) and advanced re-encoding mode, meeting diverse editing needs from social media shorts to 4K high-definition footage.

Vibe Coding Official Website is a Chinese assessment and learning platform for AI programming learners. Through the Vibe Coding capability assessment driven by real-world scenario questions, it helps users systematically improve their AI-assisted programming skills. The platform provides three levels of theme assessments: L1 Basic Understanding, L2 Workflow, and L3 Practical Application, covering 21 topics with over 210 scenario questions. After completing self-assessment questions, users immediately receive explanations and matched practice. To obtain a certificate, users must answer at least 8 out of 10 questions correctly in a single topic and complete 4 qualifying topics within the same category. The platform follows a closed-loop learning path of diagnosis, practice, construction, review, and repetition, training users to convert requirements into verifiable results, rather than simply copying AI outputs.

Queens Daily Puzzles is a free browser-based logic puzzle game where players place one queen in every row, column, and color region without any two queens touching diagonally. Featuring 1,800 puzzles across 6 grid sizes from 7x7 Beginner to 12x12 Master, it requires no download, no account, and works instantly on both desktop and mobile. Players can enjoy a fresh daily puzzle, browse the full puzzle library, and use built-in tools like markers, hints, undo, auto X, and conflict checking to practice deduction without guessing.

PixMira AI (formerly Banana AI) is a free AI photo editor and image generator that enables users to edit, restyle, transform, and recreate images effortlessly using text prompts. Powered by models like Gemini 3.1 Flash Image, GPT Image 2, and Seedream 4.5, it offers pro-level intelligence with Flash-speed performance up to enhanced 4K resolution. With a comprehensive suite of Magic Tools including AI Background Remover, Image Upscaler, Object Remover, Clothes Changer, and style conversions like Ghibli, Anime, Pixar, and Cyberpunk, PixMira AI delivers results in 1-2 seconds while maintaining identity consistency across edits. Flexible pricing plans start from free with 5 credits, scaling up to Max at $59.99/month with 4,000 credits for heavy usage.

AIGenTools is an all-in-one AI platform that consolidates leading chat, image, and video models into a single workspace. Users can access GPT-5, Claude Opus, Gemini 3, DeepSeek, Kimi K2, Grok 4.3 for AI chat; GPT Image 2, Nano Banana, Flux 2 for image generation; and Seedance, Kling, Veo for video creation — all from one account with one credit balance. With flexible Free, Basic ($9.9/mo), Pro ($16.9/mo), and Max ($49.9/mo) plans, AIGenTools offers watermark-free HD downloads, unlimited access to free and basic AI models, parallel task processing, and 100% data security with no training on user content.

MelodySeek is an AI-powered song recognition tool that helps users find music from any video in seconds. Simply paste a link from TikTok, Instagram Reels, YouTube Shorts, or Facebook Reels, upload an audio or video file, or record part of a song directly — MelodySeek will identify the track name in under 10 seconds. Once matched, users can open the song on YouTube, Spotify, or Apple Music instantly. With flexible monthly and annual plans starting at $6.99/month, plus a free tier with 5 credits, MelodySeek offers ad-free recognition, private history saving, priority support, and a built-in trim tool for noisy clips.