SEAL
SEAL is a file-transfer service for sharing documents, media, design files, datasets and archives through temporary links. In the web app, files are encrypted in-browser before upload; CLI encryption is local. Senders can set expiry, passwords, single-use access, download limits or NDA gates, review a signed access log, and revoke hosted access. Recipients open links in a browser without an account. SEAL also offers a Telegram bot and Mini App, a CLI, SDK, HTTP API and local stdio MCP server. AI agents can share or request files and secrets; after pairing, files can go to a SEAL inbox while the agent receives a handle instead of a link. The Telegram bot encrypts files on its host, so chat attachments pass through Telegram's infrastructure first; its Mini App encrypts on-device. Each seal includes up to 1 GB and seven days. One-time upgrades add capacity and lifetime; individual files are limited to 10 GB.
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Tresorit
4.4 out of 5 stars
(10 Ratings)
Tresorit is a zero‑knowledge, end‑to‑end encrypted cloud collaboration platform built for organizations that handle sensitive data. It enables secure file storage, syncing, and sharing while ensuring that only data owners and authorized recipients can access content—Tresorit itself cannot. Files are encrypted on the user’s device before upload and remain protected throughout storage and sharing.
The platform supports secure internal collaboration and external data exchange through encrypted file sharing, secure email links, digital signatures, and encrypted data rooms for client and partner collaboration. Tresorit provides granular access controls, auditability, and configurable data residency to help meet strict security and compliance requirements. Designed as a privacy‑first alternative to traditional cloud tools, Tresorit allows teams to collaborate productively without compromising control, confidentiality, or regulatory obligations.
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SendAllFiles
SendAllFiles is a Swiss-built secure file transfer service for individuals and teams sending large files while keeping control of access and decryption. Files and metadata are encrypted in the browser before upload with XChaCha20-Poly1305. Decryption keys remain client-side and never reach SendAllFiles servers. Recipients open a private link and download without an account. Senders can add optional passwords, set expiration and retention, limit downloads, receive notifications, and manage active links. Resilient chunked uploads recover from interruptions. The free plan includes up to 3 GB monthly; Pro starts at $2 per seat/month billed yearly and includes 50 GB monthly. Organizations can choose storage regions and use SAML or OIDC SSO, verified-domain onboarding, custom domains, and branded portals. SendAllFiles works in a browser and is intended for secure transfer rather than long-term storage or backup.
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Link in Seconds
Link in Seconds is a web-based file-sharing service for turning files into links that recipients can open in a browser. It supports sharing files such as documents, images, video, audio, and archives, with previews and QR codes for convenient access. Senders can use sharing controls such as passwords, expiry dates, view limits, and view-only access, and can organize multiple files into an album link. The service also provides link-view information, including PDF page-level analytics, to help senders understand recipient engagement. Additional capabilities include custom domains, hosting a static website from a ZIP archive, direct peer-to-peer transfers, and browser-based PDF tools. An upload API and an MCP server are available for developer workflows. A free plan is offered, with paid plans adding storage and website-hosting options.
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