Security and cryptography
Non-LLM vulnerability scanning, a self-playing cyber range, encrypted-at-rest stores, and licensing backed by proof-of-work.
ExtensionUltima
One encrypted extension that hosts all the others.
In Development Browser extension platform
ExtensionUltima is a modular, security-first browser extension platform. Instead of installing dozens of separate extensions, it provides one secure host with a shared capability framework, encrypted storage, an automation engine and a module ecosystem.
What it does
The security model is the product. A randomly generated 256-bit data encryption key protects everything stored; that key is itself wrapped by one derived from your passphrase via PBKDF2-SHA256, and only the wrapped key and its non-secret parameters are ever persisted. When unlocked, the key exists in memory as a non-extractable cryptographic key — locking the vault or a browser worker eviction removes access immediately. Both values and key names are encrypted, so the shape of your data is not readable either.
Around that sits a unified launcher with search, pinning and a running view, plus a background automation engine whose jobs survive service-worker eviction and browser restarts.
It never overrides your new tab page, your search or your homepage unless you explicitly ask it to. Every extension platform that does is why people distrust the category.
Who it is for
People who want browser automation and productivity tooling without granting a dozen separate extensions permanent access to everything they do.
What it costs
In development. Free core planned, with paid modules.
Terminology
Words this page uses in a specific sense.
- Envelope encryption
- A data key encrypts the data; a separate key encrypts the data key. Changing your passphrase re-wraps one small key rather than re-encrypting everything.
- Non-extractable key
- A key the browser will use for cryptographic operations but never hand back to JavaScript, so a compromised script cannot copy it out.
- Service-worker eviction
- Browsers shut down extension background workers aggressively. An automation engine that does not survive it silently stops working.
Facts
| Field | Value |
|---|---|
| Name | ExtensionUltima |
| Status | In Development |
| Category | Browser extension platform |
| Platforms | Chrome, Edge, Firefox |
| Pricing | In development. Free core planned, with paid modules. |
| Source | Closed source |
| Publisher | Cognitive Industries |
| Published from | Brisbane, Queensland, Australia |
Capabilities behind it
Related
Last reviewed · Site changelog