Sites and apps similar to Retriever include vanish.so, which is free and open source. Other options are BurnPony, One-Time Secret, cryptgeon and Privnote. You can choose from more than 10 Note-taking Tools like Retriever for self-hosting, Mac, Windows, Linux and Android.
VaultNote is a modern, privacy-focused tool for sharing sensitive data like passwords and API keys. Unlike traditional services, all encryption (AES-256) happens directly in the user's browser (Client-Side Encryption) before any data leaves the device.
OnlyU is a free, secure platform for sending self-destructing messages and passwords. No signup is required, and all messages are end-to-end encrypted by default. Once read, messages are permanently deleted.
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Temporal.PW can convert a password into a unique temporary secure URL that is safe to send via E-Mail.
Use InPrivy to share passwords and other sensitive information the secure way. Generate a secure link that will be voided once opened by the recipient (more options available). Prevent your confidential data to remain fully visible in email conversations or chats.
Securely send and receive sensitive information using one-time links. Secrets are always encrypted and decrypted client-side and cannot be seen by the service. Also has features like notifications, webhooks, branding, API.
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Enter a password or confidential message and hide it behind a link that can be accessed only once! Copy your link and send it to the recipient (customer, friend, colleague, etc.).
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Share is a web service that permit to securely share files and secrets to anyone.
If you need to send a password or some other form of simple but sensitive information to someone you can not send it over IM or email. These methods are not secure as anyone with little knowledge can intercept this information during transmission.
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