xllify
by Lexvica Limited
xllify builds custom function add-ins for Microsoft Excel from prompts or code.
xllify is a platform for creating custom Excel functions. Describe what you need in a prompt, or write code directly. Work in the browser, in Excel via the xllify Assistant add-in, or locally with the xllify agent (coming soon).
AI code assistant
Describe what you need in plain English, or paste formulas and VBA.
Standard library
AI will always try to use the included verified, tested implementations before generating new code.
No dev tooling installation
Remote builds in seconds. Nothing to install, other than this add-in.
Windows, Mac and web
One codebase. Optimised for native performance on Windows.
Native performance
XLLs run in-process with Excel. Multi-threaded recalculation, single-file deployment.
Secure by design
Sandboxed VM with no network or filesystem access. Your data stays local.
Easy to distribute
The add-ins you create with xllify can be hosted or deployed like any other add-in. There's nothing extra to install on your user's computer.
App capabilities
- Can read and make changes to your document
- Can send data over the Internet