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Privacy tools and alternatives to mainstream services with verified details on licensing, ads, and pricing.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files). Triggers include: any mention of 'Word doc', 'word document', '.docx', or requests to produce professional documents with formatting like tables of contents, headings, page numbers, or letterheads. Also use when extracting or reorganizing content from .docx files, inserting or replacing images in documents, performing find-and-replace in Word files, working with tracked changes or comments, or converting content into a polished Word document. If the user asks for a 'report', 'memo', 'letter', 'template', or similar deliverable as a Word or .docx file, use this skill. Do NOT use for PDFs, spreadsheets, Google Docs, or general coding tasks unrelated to document generation.
Guidance for distinctive, intentional visual design when building new UI or reshaping an existing one. Use whenever the user asks to build a web page, landing page, dashboard, form, or any frontend UI — whether from scratch or by redesigning an existing interface. Helps with aesthetic direction, typography, color palettes, layout, and making choices that don't read as templated defaults. Also trigger when the user says 'design a page', 'make a UI', 'build a frontend', 'redesign this', 'make it look good', or wants HTML/CSS for a visual interface.
Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.
Use this skill any time a .pptx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating presentations; combining or splitting slide files; working with templates, layouts, speaker notes, or comments. Trigger whenever the user mentions 'deck,' 'slides,' 'presentation,' or references a .pptx filename, regardless of what they plan to do with the content afterward. If a .pptx file needs to be opened, created, or touched, use this skill.
Create new skills, modify and improve existing skills. Use when users want to create a skill from scratch, edit, or optimize an existing skill. Also trigger when the user says 'create a skill', 'make a skill', 'improve this skill', 'update skill', 'turn this into a skill', or when a task is important and likely to repeat.
Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like 'the xlsx in my downloads') — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.
| name | privacy |
| description | Privacy tools and alternatives to mainstream services with verified details on licensing, ads, and pricing. |
Brave is a privacy-focused browser built on the open-source Chromium Web core. It blocks ads and trackers by default, providing 3x faster browsing than Chrome while saving data and battery life. The browser includes built-in Tor support for private browsing and a unique rewards system using Basic Attention Token (BAT).
Firefox is Mozilla's flagship open-source browser, offering strong privacy protections and high customizability through about:config settings. It supports extensive privacy-focused extensions and is developed by a non-profit organization dedicated to internet openness.
Developed in collaboration between Mullvad VPN and the Tor Project, Mullvad Browser provides strong anti-fingerprinting protections out of the box. It removes telemetry and is designed to minimize tracking without requiring user configuration.
The Tor Browser routes traffic through the Tor network to anonymize connections. Based on Firefox ESR with additional privacy patches, it is the standard for anonymous browsing and prevents fingerprinting.
A Firefox fork focused on privacy, security, and freedom. LibreWolf removes telemetry and disables features that could compromise privacy. It includes uBlock Origin by default and is always built from the latest Firefox stable source.
DuckDuckGo is a privacy-focused search engine that does not track users or store personal information. It provides anonymous search results without filter bubbles and offers both web search and a private browser app.
Startpage delivers Google search results through proprietary personal data protection technology. It removes IP addresses and does not store search history.
Brave Search is an independent search index with privacy-by-design approach. It does not track queries or user profiling and is built on a completely independent index.
Mojeek is an independent crawler-based search engine based in the UK. It maintains its own index rather than relying on Bing or Google and offers unbiased, fast, and relevant search results.
Ghostery Private Search delivers objective results not influenced by clicks or preferences. It shows real-time tracker information for each website and does not record search history.
Proton Mail is an end-to-end encrypted email service based in Switzerland. It provides zero-access encryption ensuring even Proton cannot read user emails. The service offers custom domains and alias support.
Tuta is a German-based encrypted email service with automatic end-to-end encryption for all emails. It uses 100% renewable energy and is fully open source.
Mailbox.org is a German email provider focusing on security, ad-free experience, and eco-friendly energy. It supports encryption and offers an integrated office suite.
Posteo is a Berlin-based email service with strong privacy reputation. It is completely ad-free and 100% powered by green energy from Green Planet Energy.
Signal is the gold standard for secure messaging, using the open-source Signal Protocol for end-to-end encryption. Developed by Signal Messenger LLC, it is a non-profit organization.
Session is a decentralized messaging app forked from Signal. It requires no phone number for registration and uses onion routing through the Session Network for metadata protection.
Wire is a Swiss-based secure messenger with end-to-end encryption, regularly audited open-source code, and suitable for both personal and enterprise use.
Threema is a Swiss privacy-focused messenger that does not require phone number or email. It uses open-source encryption technology and provides end-to-end encryption for all messages, calls, and file transfers.
SimpleX is a decentralized messaging platform with no user identifiers of any kind. It uses temporary anonymous connections and double-ratchet encryption.
Mullvad is a Swedish VPN service with a strong no-logging policy. It accepts cash payments and anonymous accounts without email registration.
Proton VPN is a Swiss-based VPN with strong privacy law protections. It features Secure Core architecture routing traffic through multiple servers.
IVPN is a privacy-focused VPN with strict no-logging policy, transparent ownership, and regular security audits.
Tails is a live operating system designed for anonymity. It routes all connections through Tor and leaves no trace on the computer after shutdown.
Qubes OS is a security-oriented OS using virtualization to isolate different tasks into separate compartments (qubes). It minimizes attack surface through isolation.
Whonix consists of two virtual machines: Gateway (routes all traffic through Tor) and Workstation (user applications). It provides strong isolation and anonymity.
GrapheneOS is a privacy and security-focused mobile OS for Pixel devices. It hardens Android with enhanced sandboxing, permission controls, and exploit mitigations.
PureOS is a Debian-based GNU/Linux distribution focusing on privacy, security, and freedom. It is endorsed by the Free Software Foundation and uses exclusively free software.
Bitwarden is an open-source password manager with end-to-end encryption. It offers self-hosting options and is widely trusted for personal and business use.
KeePassXC is an offline password manager with strong encryption. It stores passwords in a local encrypted database with no cloud dependency.
Proton Pass is an end-to-end encrypted password manager integrated with the Proton ecosystem. It supports hide-my-email aliases for account creation.
Nextcloud is a self-hosted cloud storage solution with end-to-end encryption. Users maintain full control over data with no third-party access.
Cryptomator is client-side encryption tool for cloud storage. It works with any cloud provider by encrypting files locally before upload.
Proton Drive is encrypted cloud storage with zero-access encryption. No file metadata or content is accessible to the service provider.
uBlock Origin is a free, open-source browser extension for content filtering and ad blocking. It is highly efficient with low CPU and memory usage.
Privacy Badger is a browser extension from EFF that automatically learns to block invisible trackers using heuristic-based approach.
LocalCDN is a browser extension that emulates Content Delivery Networks locally. It prevents third-party requests to external CDNs that could track users.
LibreOffice is an open-source office suite alternative to Microsoft Office. It requires no cloud connectivity and collects no data.
Jitsi Meet is an open-source video conferencing solution requiring no account for meetings. It provides end-to-end encryption for one-to-one calls.
Syncthing is a decentralized file synchronization tool with P2P architecture. It has no central server and uses end-to-end encrypted transfers.
