some privacy services. mostly taken from https://github.com/pluja/awesome-privacy, but I also take other suggestions.
Free and Open Source Translation API. 100% self-hosted, no limits, no ties to proprietary services. Built on top of Argos Translate.
Open Source Machine Translation - 100% Self-Hosted. No Limits. No Ties to Proprietary Services.
Apertium is a rule-based machine translation platform. It is free software and released under the terms of the GNU General Public License.
A free/open-source machine translation platform, runs offline on your computer
Translate Locally is a desktop application for text translation. Unlike cloud providers, all processing is performed locally and your text remains privately on your computer.
Free/open-source neural MT, runs offline on your computer
Alternative front-end for 
Google Translate, serving as a Free and Open Source translator with over a hundred languages available
Alternative front-end for Google Translate.
Google Translate alternative frontend that enhances privacy, supports 108 languages and includes Text-To-Speech features for versatile language translation needs.
Alternative front-end for Google Translate and LibreTranslate.
SkyMap provides interactive sky maps for any time, viewpoint and location on Earth. It shows the different names, coordinates, magnitude, astronomical rise and set times plus additional information for over 110000 stars, messier objects, planets, sun and moon.
Open online planetarium program.
Turns any device with a web browser into a second screen for computers, supporting entire screen or app sharing, secure encrypted streams, multiple devices, and video quality controls.
Turn any device into a secondary screen for your computer.
Free, open-source conferencing with end-to-end encryption, group chat, screen sharing, Etherpad integration, customizable setup, and privacy by default.
More secure, more flexible, and completely free video conferencing. No account needed, no installation needed.
Open source peer-to-peer platform for voice and video calls, encrypted chat, file sharing, conference support, and cross-platform privacy features.
P2P audio and video conferences.
BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.
BigBlueButton is a web conferencing system designed for online learning.
Make video calls to anybody in the world with a private connection. Share the conversation by sharing url.
Group peer to peer video calls for everyone written in Go and TypeScript.
Jam is your own open source Clubhouse for mini conferences, friends, communities.
Open source, low-latency voice chat offering high quality audio, secure encryption, self-hosting, in-game overlays, positional audio, and granular permissions.
Mumble is an open source voice communication application with advanced features.
Enhances Discord with emotes, theme loader, CSS customization, and plugin support. Includes Minimal modes and requires existing Discord installation.
A client modification for Discord, also you need to install a DoNotTrack plugin to block trackers.
A lightweight Discord client mod focusing on simplicity, performance, and user experience by offering customizable plugins, themes, and improved security.
A lightweight client mod focused on simplicity and performance that comes with a No Track function.
Olive is a free non-linear video editor aiming to provide a fully-featured alternative to high-end professional video editing software.
Free open-source advanced non-linear video editor currently in Alpha state.
Intuitive multi-track video editor with robust hardware-accelerated support; offers chroma key, color grading, and extensive audio/video format compatibility.
Open source video editor. Free and easy to use for any purpose, forever.
Free, open-source video editing with multi-format timelines, frame accurate seeking, and robust capture support up to 4k for diverse projects.
Shotcut is a free, open source and simple cross-platform video editor.
Open source Android web browser disabling JavaScript, DOM storage, and cookies by default, allowing domain-based adjustments, EasyList blocking, SSL pinning, Tor support, fullscreen, and night mode.
This is a privacy oriented and deblobbed web browser based on 
Mozilla Firefox technology. It enables many features upstreamed by the 
Tor Uplift project using preferences from the arkenfox-user.js project.
Privacy hardened fork of Firefox for Android, with proprietary blobs removed.
Privacy browser for iOS with custom privacy levels, ad and tracker blocking, smart cookie control, HTTPS enforcement, VPN integration, and open-source features.
iOS
Open-source browser with Gecko engine, supporting HTML add-ons and providing privacy features like Enhanced Tracking Protection and third-party cookie blocking.
Open Source, independent browser. It needs some hardening and tweaking to achieve great privacy.
This project is a custom and independent version of Firefox, with the primary goals of privacy, security and user freedom.
Privacy-focused Firefox fork.
Open-source browser disables Google integration and background services, increasing privacy, stripping binaries, and offering user control with full transparency.
The Tor software protects you by bouncing your communications around a distributed network of relays run by volunteers all around the world: it prevents somebody watching your Internet connection from learning what sites you visit, it prevents the sites you visit from learning...
Fast, secure browser with built-in ad block, privacy controls, and global tracking protections. Optimizes data, speed, and battery life.
Controversial option.
uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker. It blocks ads, trackers, coin miners, popups, annoying anti-blockers, malware sites, etc., by default using EasyList, EasyPrivacy, Peter Lowe's Blocklist, Online Malicious URL Blocklist, and uBO...
Free, open-source ad content blocker. Easy on CPU and memory.
This extension will automatically remove tracking elements from URLs to help protect your privacy when browse through the Internet.
This extension will automatically remove tracking elements from URLs to help protect your privacy when browsing the Internet and sharing links.
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
Protects you against tracking through "free", centralized, content delivery.
Control your cookies! This extension is inspired by 
Self-Destructing Cookies. When a tab closes, any cookies not being used are automatically deleted. Prevent tracking by other cookies and add only the ones you trust.
When a tab closes, any cookies not being used are automatically deleted. Prevent tracking by other cookies and add only the ones you trust.
Send referers only when staying on the same domain. You can whitelist domains with wildcards and configure other things, look in the preferences page of the addon in the addon manager.
Automatically hide HTTP and JavaScript Referer for cross-domain requests.
A web extension that redirects YouTube, Twitter, Instagram... requests to alternative privacy friendly frontends and backends.
A simple web extension that redirects Twitter, YouTube, Instagram, Google Maps and many more requests to privacy friendly alternatives.
Browser extension enabling one-click saving of full web pages with images, styles, and fonts as a single HTML file for offline access, annotation, and batch saving.
Save a faithful copy of an entire web page in a single HTML file.
Free and open source tool for syncing your browser data between browsers and devices whilst maintaining your privacy and anonymity.
Browser syncing as it should be: secure, anonymous and free!
Comments
Good work, it's such a good list. I would add :
E-mail providers
Photo storage
Apple Music Client
Reddit client
2FA
Thank you, I will add these soon. I am very busy right now so I'll probably do it later this week.