Observed arrival · 2026-08-26
Posthum, a journal with a long memory
A private encrypted journal for quick notes, future-self time capsules, and letters intended for people you name.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The journal organizes entries into private drafts, sealed letters, and legacy notes. The page describes browser-side encryption using PBKDF2-SHA256, a random 256-bit vault key, and AES-256-GCM, while warning that a lost passphrase and recovery key cannot be restored by the service. Its examples include messages scheduled for 2042 and a birthday letter intended for a named recipient.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue