Life & fun · alternatives · 2026

24 alternatives to LockDoc

Send encrypted files through GMail and Outlook

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Encrypt PDF▲77
Encrypt/password protect PDF for free
2023 · onepdf.online · its alternatives →
2
Send by Firefox▲478
Share large files online, encrypted for free
2017 · mozilla.org · its alternatives →
3
Send/Share Files by Couchdrop▲135
Send encrypted file links instead of email attachments
Oct 2025 · couchdrop.io · its alternatives →
4
SendSecurely.io▲89
Permissioned and auditable secure file and document sharing
2023 · sendsecurely.io · its alternatives →
5
Send Files Encrypted▲68
Send encrypted files in your browser and share them securely
2023 · sendfilesencrypted.com · its alternatives →
6
ScoutDocs▲70
Secure file sharing for WordPress.
2018 · its alternatives →
7
SendSecure.io▲96
Send and share files securely, directly and free
2019 · its alternatives →
8
End to End Encryption File Sharing▲90
Securely share sensitive files
2022 · comply.strac.io · its alternatives →
9
transferfile.io▲85
Encrypted filesharing through the IPFS network
2021 · sedo.com · its alternatives →
10EE
Easy Email Encryption inside Gmail (Alpha, Open-Source)▲170
Manage sales and customer relationships directly inside Gmail. Streak is the CRM your team will actually use—integrated, smart, and loved by 750,000+ users.
2013 · streak.com · its alternatives →
11
NordLocker▲87
Store and share your files securely
2020 · nordlocker.com · its alternatives →
12
Hirosend▲90
I built Hirosend because I needed a fast and secure way to send files to clients without asking them to create accounts or navigate permission screens. Dropbox/Drive were too heavy for one-off transfers, WeTransfer felt clunky for quick sends, and I really missed the simplicity Firefox Send had before it shut down. Hirosend lets you upload a file, set expiration, add an optional password, or generate a one-time magic link. Recipients just click and download — no signup required on their side. Files are encrypted before being stored and automatically deleted after expiration. There are…
Nov 2025 · hirosend.com · its alternatives →
13
ShareBox▲104
Effortless secure file sharing
2025 · shareboxed.app · its alternatives →
14
BlockDoc▲78
Decentralized secure documents manager with private sharing
2019 · its alternatives →
15
SendFiles.Online▲75
Send files online encrypted in your browser up to 100GB
2022 · sendfiles.online · its alternatives →
16
Secure Send for Slack▲75
Send files securely without leaving your Slack channel!
2020 · its alternatives →
17
Unlock PDF▲80
Remove password from PDFs in an easy & fast way
2023 · onepdf.online · its alternatives →
18
Orangedox Secure Share▲3
Securely Share your Google Drive Documents
2022 · orangedox.com · its alternatives →
19
ySendit▲73
Send data without limits
2020 · its alternatives →
20
The Papers▲70
Manager for all your boring papers and documents at home
2023 · its alternatives →
21
Aryson PDF Unlocker▲66
Best tool to unlock the encrypted PDF files effectively
2022 · arysontechnologies.com · its alternatives →
22
Lock PDF▲2
Password protect and encrypt your PDF online
2018 · lockpdf.com · its alternatives →
23
PDF Decryptor▲78
Create password-less copies of protected PDFs for free
2022 · pdfdecryptor.vercel.app · its alternatives →
24
Jumble for Gmail▲21
Encrypt emails (for free) using your existing Gmail account
2015 · chromewebstore.google.com · its alternatives →

Also compare

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →