27 Smarter Alternatives to Figma, Slack, Notion and Co. – Most Run Right in the Browser

For many tools that teams use every day, there are now alternatives that work just as well – sometimes better. Not because they're just cheaper or even free, but because they're built leaner, carry less overhead and focus on what most users actually need. Figma, Slack, Calendly, Loom, Mailchimp, Google Analytics, Zoom – for each of these there's a serious alternative today that doesn't feel like a compromise.

This list brings together 27 of them. All actively maintained, all fit for use in 2026, all running at real teams. Where there are sensible further options within a category, they're listed in parentheses.

Diagrams & Whiteboards

1. draw.io – instead of Lucidchart

draw.io (also known as diagrams.net) has been the standard for technical diagrams for years. Flowcharts, UML, network diagrams, ER models – everything runs in the browser, saves locally or to Google Drive, no account required. There's a desktop app on top. Lucidchart starts at 9 dollars a month for features that draw.io has offered for free for years.
→ draw.io (Alternative for hand-drawn style: Excalidraw)

2. AFFiNE – instead of Miro + Notion

AFFiNE is the only tool on this list that replaces two incumbents at once. Docs, whiteboard and databases live in the same workspace – you don't switch between apps, you switch between views. Data lives on your device by default, cloud sync is opt-in. Self-hosting via Docker is possible. Notion's database features are more mature, Miro's whiteboard more polished – but no other tool comes as close to both.
→ affine.pro (For pure solo knowledge management: SiYuan; for team wiki: Outline)

Agenda Planning

3. Sessionplan – instead of SessionLab

Sessionplan is a free, browser-based agenda planner for workshops, trainings and events. Arrange blocks on a visual timeline, times are calculated automatically, drag & drop works on a tablet too. No account, no cloud, no registration – your data stays in the browser. As a PWA the tool can be installed and works offline. SessionLab charges money from three sessions onwards for features Sessionplan offers free, permanently.
→ sessionplan.de

Design & Image Editing

4. Photopea – instead of Adobe Photoshop

Photopea opens PSD, AI, XD and Sketch files, understands layers, masks, smart objects and adjustment layers – and runs in the browser with no installation. For occasional image editing that's simply enough. People who work with it every day will notice the lack of GPU acceleration on very large files. For 90 percent of use cases it's more than adequate.
→ photopea.com (Alternative: Pixlr E)

5. Penpot – instead of Figma

Penpot is the most serious Figma competitor in the open-source space. SVG-native, real-time collaboration, components, prototyping, design tokens – and self-hostable. The feature set isn't 1:1 identical yet, but the gap shrinks with every release. Anyone looking for a way out after the price hikes of recent years has found the cleanest exit path here.
→ penpot.app

6. Squoosh – instead of TinyPNG / Adobe image compression

Squoosh is a Google project that runs entirely in the browser and compresses images via WebAssembly – without a single pixel ever being uploaded to a third-party server. Quality slider, side-by-side comparison, support for modern formats like WebP and AVIF. The fastest way to go from an oversized JPEG to a web-ready image.
→ squoosh.app

Documents & Office

7. OnlyOffice – instead of Microsoft Office / Google Docs

OnlyOffice is the most complete self-hostable office suite out there. Writer, Calc and Impress read and write .docx, .xlsx and .pptx without conversion loss – something LibreOffice can't always claim. The Community Edition runs on your own server, integrates with Nextcloud and supports real-time collaborative editing. For teams that need Microsoft compatibility but don't want to pay Microsoft prices, this is the most realistic option.
→ onlyoffice.com (Alternative: Collabora Online)

8. Stirling PDF – instead of Adobe Acrobat

Stirling PDF brings a complete PDF toolkit to your browser: merge, split, compress, rotate, OCR, password protection, watermarks, fill form fields. Everything runs locally, no document ever leaves your own server. It runs as a Docker container, so some technical setup is involved. Anyone who'd rather skip that will find a solid browser-based alternative in PDF24 without the self-hosting overhead.
→ github.com/Stirling-Tools/Stirling-PDF (Without self-hosting: PDF24)

Cloud & File Storage

9. Nextcloud – instead of Google Drive / Dropbox

Nextcloud is the Swiss army knife of self-hosted platforms. File sync, calendar, contacts, video conferencing, office integration via Collabora or OnlyOffice, mail client, kanban boards – all in one platform, on your own server. The app library has more than 300 extensions. Setup takes real effort, but with the official installer it's done in an hour.
→ nextcloud.com

Photo Management

10. Immich – instead of Google Photos / iCloud

Immich looks like Google Photos, behaves like Google Photos – automatic phone backup, timeline, albums, face recognition, map view – but all data lives on your own server. It needs hardware or a rented server, so it's not a pure browser tool. For photo privacy there's hardly a better alternative, and the setup overhead is manageable with Docker Compose.
→ immich.app

Screen Recording

11. Cap – instead of Loom

Cap offers an Instant mode for quick explainer videos with an immediate share link, and a Studio mode for polished 4K recordings. AI summaries and self-hosting via Docker are included. Anyone switching from Loom can import existing videos directly. Loom costs 15 dollars per user per month. Cap is free as a self-hosted option, and the cloud plan sits at around 8 dollars – well below the original.
→ cap.so

Video Editing & Streaming

12. OpenCut – instead of CapCut / Adobe Premiere Rush

OpenCut delivers a timeline-based video editor right in the browser. No download, no install, no cloud requirement. For simple cuts, subtitles and social-media clips it already works well. The project is still young – anyone needing polished professional features will notice. But for anyone avoiding CapCut for privacy reasons, this is the cleanest alternative available.
→ opencut.app

13. Owncast – instead of Twitch / YouTube Live

Owncast gives you your own live-streaming platform: your own stream key, your own chat, your own domain, no algorithm deciding who sees your content. For creators, businesses or event organisers who don't want to hand their streams to a platform, it's the only serious self-hosted option. You need a server with enough bandwidth – a cheap rented server is enough for smaller streams.
→ owncast.online

Video Conferencing

14. Jitsi Meet – instead of Zoom / Google Meet

Jitsi Meet runs in the browser, needs no account and no plugin. Create a link, share it, done. Self-hosting is possible and recommended for privacy-sensitive contexts. For spontaneous calls and small groups, the public instance at meet.jit.si is more than enough. For very large groups or specific enterprise requirements, Zoom still wins – but for everyday use you rarely need that.
→ meet.jit.si

Data & Databases

15. NocoDB – instead of Airtable

NocoDB connects to an existing PostgreSQL, MySQL or SQLite database and presents it as an Airtable-like interface with grid, gallery, kanban and form views. The key difference from Airtable: the data lives in a real database that you control – not in someone else's cloud. For teams that want Airtable comfort combined with real data control, this is the most direct path.
→ nocodb.com (Alternative: Baserow)

16. Metabase – instead of Tableau / Power BI

Metabase is data analysis without SQL knowledge. Connect a database, ask questions in plain language, build dashboards. The free edition is self-hostable. Tableau starts at 75 dollars per user per month. For small and mid-sized teams that want to visualise their data without hiring a dedicated analyst, Metabase is the most pragmatic entry point – even if it doesn't reach the enterprise features of the big players.
→ metabase.com

Passwords & Security

17. Vaultwarden – instead of 1Password / LastPass

Vaultwarden is an unofficial but fully Bitwarden-compatible server implementation – significantly lighter than the official Bitwarden server and easy to run on a cheap rented server. All Bitwarden clients (browser extension, desktop, mobile) work with it without any changes. Anyone who doesn't want their password manager living in someone else's cloud has come to the right place.
→ github.com/dani-garcia/vaultwarden (Without your own server, free: Bitwarden)

Team Communication

18. Mattermost – instead of Slack

Mattermost is Slack, but on your own server. Channels, threads, integrations, slash commands, webhooks – the concept is identical, the data stays internal. For companies with GDPR requirements or industries with strict compliance rules, this is often not an option but a necessity. The Community Edition is free, enterprise features cost extra – but core operation runs without licence fees.
→ github.com/mattermost/mattermost (Alternative for decentralised messaging: Element/Matrix)

Project Management

19. Plane – instead of Jira / Linear

Plane hits the sweet spot between Jira's complexity and Linear's minimalism. Issues, sprints, roadmaps, cycles, modules – all there, nothing overloaded. Self-hosting via Docker is well documented. Anyone who hates Jira but needs the structure has found the most direct replacement here.
→ plane.so (Alternative with broader scope including team chat: huly.io)

AI Interface & Coding

20. Open WebUI – instead of the ChatGPT interface

Open WebUI is the interface many people miss when running local language models via Ollama. Conversation history, model switching, document upload, image generation – all in a surface that looks like ChatGPT but runs entirely locally. No usage limits, no subscription. Anyone already running Ollama has Open WebUI set up in five minutes.
→ openwebui.com

21. Opencode – instead of Claude Code / GitHub Copilot CLI

Opencode is an AI coding assistant for the terminal that works with any AI provider: Anthropic, OpenAI, local models via Ollama. No vendor lock-in, full control over model and cost. Claude Code is good – but for many teams hard to justify when Opencode offers the same workflow with the model of your choice.
→ opencode.ai

API Development

22. Hoppscotch – instead of Postman

Hoppscotch is a tool for testing APIs that runs straight in the browser – no download, no account, no 500 MB Electron app. REST, GraphQL, WebSocket and gRPC are all supported. Self-hosting is possible for teams that want to share collections internally. Postman has become heavier and more account-dependent over the years. Hoppscotch is the counter-model.
→ hoppscotch.io

Scheduling

23. Cal.com – instead of Calendly

Cal.com is the most complete Calendly replacement out there. Unlimited booking pages, custom domain, team routing, workflows, payment integration – and self-hostable. With cal.diy there's even a stripped-down version that deploys to your own server in minutes. Calendly starts at 12 dollars a month for features that Cal.com includes for free in the self-hosted edition.
→ cal.com

Newsletter & Email Marketing

24. Listmonk – instead of Mailchimp / ConvertKit

Listmonk ships with a complete newsletter manager – subscriber management, campaigns, templates, open-rate tracking – as a single, lean application you run yourself. Combined with a cheap email delivery service like Amazon SES, you can send large volumes of email for a fraction of what established newsletter platforms charge. The setup effort is real but manageable.
→ listmonk.app

Web Analytics

25. Plausible – instead of Google Analytics

Plausible is the counter-model to Google Analytics: a script tag, no cookies, no cookie banner needed, GDPR-compliant out of the box, a dashboard you understand in 30 seconds. Self-hosting is possible. Anyone who needs deeper product analytics – session recordings, feature flags, A/B tests – should look at PostHog, which can also be self-hosted.
→ github.com/plausible/analytics (For product analytics: PostHog)

Deployment & Infrastructure

26. Coolify – instead of Vercel / Heroku / Render

Coolify installs on any rented server and gives you a Heroku-like deployment interface: Git-based deploys, automatic SSL, database provisioning, 280+ one-click apps. Anyone who wants to self-host several tools from this list will find Coolify a useful central control point – everything runs on one server you control yourself.

→ coolify.io

Forms & Surveys

27. Tally – instead of Typeform / Google Forms

Tally is a modern form and survey builder that runs in the browser and is free for most use cases. Drag-and-drop forms, conditional logic, embeds, integrations with Notion, Google Sheets and Zapier. Typeform starts at 25 dollars a month, Google Forms feels like 2010 – in between, Tally is the honest free choice for 90 percent of use cases.
→ tally.so (Alternative for self-hosting: Formbricks)

Bottom line

Choosing an established tool used to be the safe bet – because there simply weren't any serious alternatives. For many categories, that's no longer true. Tools like Penpot, Sessionplan, AFFiNE, Cal.com or Immich aren't stopgaps. They're standalone products with clear strengths that are the better choice for many use cases – not despite their leanness, but because of it. The only real downside with self-hosted options is the setup effort. Anyone who'd rather skip that will find a hosted version of most tools that's still cheaper than the incumbent.

If you plan workshops and trainings, you can get started with Sessionplan right away – no install, no account, no subscription.