TOOL [Live]
Upscale Image
Upscale photos with Real-ESRGAN. Beta quality for now. We are actively improving output.
Independent technology studio
Small tools. Big experiments.
Callisto is an independent technology studio building focused digital tools, workflow utilities, and experimental products — from tiny one-purpose utilities to research-driven systems.
The Callisto System
Things we're building
An evolving ecosystem — tiny utilities, standalone products, and longer experiments. Nothing here pretends to be finished.
01 Tools
Small tools for small problems — fast, focused, and deliberately simple.
TOOL [Coming Soon]
PDF Kit
Clean, crop, merge and extract pages without opening a bloated editor.
UTILITY [Coming Soon]
JSON Lens
Inspect, format and diff JSON with a calm, keyboard-first interface.
UTILITY [Coming Soon]
Table Forge
Turn messy tabular data into something you can actually work with.
02 Products
Larger products built around workflows rather than single tasks.
PRODUCT [Coming Soon]
Callisto Cookbook
Save, organize and cook from recipes without the noise of a social feed.
PRODUCT [Coming Soon]
Favorites Hub
A quiet place to collect links, references and saved fragments — then actually use them.
03 Research
A quieter layer of the system — questions that don't have obvious answers yet.
Behavioral Index
A research-driven system for analyzing video and indexing observable behavioral patterns using the Big Five / OCEAN framework. Experimental, not a verdict.
Notes on making
Useful first. Interesting second.
Callisto is built around a simple idea: software doesn't need to be massive to be valuable. Some projects solve one tiny problem. Others explore questions that don't have obvious answers yet. The common thread is curiosity, usefulness, and a preference for building things that earn their place.
Journal
Journal
Notes on tools, systems, experiments, technology, and things worth figuring out.
Building
On building software that stays small
Most tools fail by growing. Notes on keeping a utility useful by refusing to become a platform.
ExperimentsAn AI experiment that failed usefully
What broke, what we kept, and why inconclusive results still belong in the lab notebook.
WorkflowsA workflow is a promise to your future self
Automation only earns its place when it reduces friction without hiding the work.