Independent software · open source


# We build software worth keeping.


Coopanio builds useful software, contributes to open source and offers focused engineering services. Led by Dario Castañé, author of Mergo.


[Explore our projects](https://coopanio.com/projects/) [About Coopanio](https://coopanio.com/about/)



## Code you can inspect.

Independent projects, with status and provenance made clear.
[MergoGo · stable, feature-frozen v1 · founder’s project](https://github.com/darccio/mergo)  [AsembleoRuby · public source · Coopanio project](https://github.com/coopanio/asembleo)  [corbSandboxed coding agents · experimental](https://corb.ax/)  [Go engineeringScoped upgrades, dependency rescue and care](https://coopanio.com/services/)

The person behind the work

## Dario Castañé

Software engineer, open-source maintainer and founder of Coopanio. Dario created Mergo in 2013. His projects reflect that hands-on experience.

[Personal site (external link)](https://dario.cat/)  · [Professional background on LinkedIn (external link)](https://www.linkedin.com/in/darccio/)


## Small tools. Long useful lives.

We prefer software with a clear purpose, understandable code and a life beyond its first release. That shapes our own projects, our open-source contributions and the engineering work we take on.

[Read how we work](https://coopanio.com/about/)


## Projects in the open.

Useful tools, public code and engineering decisions you can inspect.
[Explore the projects](https://coopanio.com/projects/)

[Founder’s project
Stable / feature-frozen v1

### Mergo

Its README lists containerd, Docker CLI, Grafana Loki and Moby among downstream projects. These are library users, not a Coopanio client list.
Go · BSD-3-Clause
3,109 GitHub stars
Checked 8 Oct 2026](https://github.com/darccio/mergo#mergo-in-the-wild)  [Coopanio project
Public source

### Asembleo

Pseudonymous voting software for general assemblies. Source and setup notes are public; no hosted-service or ongoing support commitment is implied.
Ruby · AGPL-3.0](https://github.com/coopanio/asembleo)  [Founder’s project
Experimental

### corb

Run Pi inside a restricted micro-VM, with configurable filesystem and network access. Explore the tool, its documentation and source at corb.ax.
TypeScript
Linux / macOS](https://corb.ax/)

## Engineering, when you need it.

Alongside our own software, we offer focused Go engineering: scoped upgrades, dependency work and security triage, with clear deliverables.
[Explore Go engineering](https://coopanio.com/services/#offers)