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Hellenic Development | Intelligence. Engineered.
HELLENIC DEVELOPMENT

Intelligence.
Engineered.

Foundational developer infrastructure. A private desktop AI assistant, an open-source Go web framework, and a self-hosted identity server.

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Our Products

Foundational software for development teams. Each product represents a different answer to the same question: what would we build if we refused to compromise?

Plexon AI

Live

A private desktop AI assistant. 12 personas, 64 app connectors used with your own accounts, and one marketplace for skills, agents and tools. It builds boards and jobs that keep running, and your data stays on your machine.

A dashboard built inside Plexon AI, with a live map and two gauges driven by parameters at the top of the board. [A dashboard built inside Plexon AI, with a live map and two gauges driven by parameters at the top of the board.]
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Iris Framework

Open Source

An open-source web framework for Go, built in the open since 2016. An application builder the compiler checks, typed path parameters, dependency injection, and 30 middleware packages in the same module. BSD-3-Clause licensed.

25,564

Stars

2,429

Forks

2016

Since

Learn more

Hellenic Identity

Live

Enterprise identity and access management. OAuth 2.0, OpenID Connect, quantum-resilient cryptography, user & group management, custom schemas, API logging, and a modern admin panel. All self-hosted.

Dashboard

+ Add User

Welcome to your Hellenic Identity Server admin panel

System Overview

Total Users

96,317

96,317 active, 0 disabled

User Groups

0

Filter-based user collections

Quick Actions

Manage Users

Create, edit, and manage user accounts

User Groups

Manage filter-based user groups

User Attributes

View user schema and debug tokens

API Logs

Monitor and debug API requests

Admin panel shown with sample data.

Learn more

RNS

Multi-tenant push notification gateway for mobile applications.

Coming Soon

Patrol

Real-time error tracking and log aggregation with multi-channel notifications.

Coming Soon
Plexon AI

One AI. Every part of the job.

A desktop assistant that works inside the apps you already use, signed in as you. It remembers what it learned, builds the boards and jobs you describe, and runs from your computer, where your data stays.

12 personas, each a different mind
64 apps, with your own accounts
One marketplace, 7,100+ items
Dashboards, workflows and scheduled jobs
Agents working in parallel
A stateless server that stores nothing
12
Personas
64
App connectors
156
Agents
The Plexon AI desktop app on its home screen, with prompt suggestions, the command palette bar, and the workspace and profile menu open. [The Plexon AI desktop app on its home screen, with prompt suggestions, the command palette bar, and the workspace and profile menu open.]
Iris Framework

The compiler checks the wiring.

Iris is an open-source web framework for Go, built in the open since 2016. An application is assembled through 8 interfaces, each narrower than the last, so a step called out of turn fails the build rather than the deploy.

Typed path parameters, dependency injection, one central error map, and 30 middleware packages in the same module.

25,564
GitHub stars
2,429
Forks
2016
First release

Star and fork counts read from the GitHub API on 2026-08-11. Licensed BSD-3-Clause.

main.go
package main

import "github.com/kataras/iris/v14"

func main() {
    app := iris.New()

    app.Get("/", func(ctx iris.Context) {
        ctx.JSON(iris.Map{"message": "Hello, World!"})
    })

    app.Get("/greet/{name:string}", func(ctx iris.Context) {
        ctx.WriteString("Hello, " + ctx.Params().GetString("name"))
    })

    app.Listen(":8080")
}

Two routes, and the second one validates itself

The type in the path is not documentation. A request to /greet/ with something that is not a string never reaches the handler, and the same is true of every other built-in type and any macro you write yourself.

More about Iris

Why Hellenic

We do not build products to demonstrate what is possible. We build infrastructure developers depend on every day.

Private by Architecture

Privacy is not our policy. It is our architecture. Plexon's servers are stateless and hold no copy of your data, so we cannot read it even under compulsion.

Open Source at the Foundation

Iris has been open source since day one, with 25,564 stars and a decade of contributions. We earned trust the only way that matters: by shipping code anyone can read.

Performance as a Discipline

We do not optimize after the fact. Performance is a first-class design constraint, from high-throughput Go backends to AI pipelines that execute in parallel.

Built by Those Who Use It

Every product we ship is a product we use. Our founder created Iris. Our team builds on Plexon daily. We build from within, not from the outside.

Leadership

Gerasimos Maropoulos [Gerasimos Maropoulos]

Gerasimos Maropoulos

Founder & CEO

Creator of the Iris web framework. Over a decade of Go development. 25,564 GitHub stars on Iris alone.

LinkedIn
Christos Papadopoulos [Christos Papadopoulos]

Christos Papadopoulos

Co-Founder & CMO

People-focused creative and strategic direction. Brand storytelling and authentic marketing that connects ideas with people.

LinkedInInstagram Instagram

What we do

Engineering services from the team behind Iris and Plexon AI. We bring the same rigor to your problems that we bring to our own products.

AI Integration & Privacy Architecture

  • Deploy AI systems with verifiable privacy guarantees
  • Integrate LLMs into workflows without data exposure
  • On-premise architectures for regulated environments
  • Intelligent automation within your security perimeter

System Architecture & Engineering

  • Design systems that perform at scale from day one
  • Resolve architectural debt before it compounds
  • Microservices, monoliths, or the right hybrid for your constraints
  • Security-first design for finance, healthcare, and government

Team Enablement & Knowledge Transfer

  • Hands-on workshops built around your actual codebase
  • Go, AI tooling, and modern systems architecture
  • Code review that transfers understanding, not just corrections
  • Build internal capabilities that outlast the engagement

Rapid Product Development

  • Production-quality MVPs delivered in weeks
  • Transparent process with weekly demonstrations
  • Architecturally sound from the first commit
  • Clean handoff with full documentation when ready

Let's Discuss Your Architecture

No pitch deck. A direct conversation about your technical challenges with engineers who have shipped at scale. We will be honest about whether we are the right fit.

Get in Touch

Start a Conversation

Describe what you are building. We will be direct about whether our expertise is the right match.

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message:

Frequently Asked Questions

What people ask about Hellenic Development, its products, and how it works.

What is Hellenic Development?

Hellenic Development is a developer infrastructure company founded in 2025 by Gerasimos Maropoulos and Christos Papadopoulos. It builds and maintains three products: Plexon AI, a private desktop AI assistant; Iris, an open-source web framework for Go; and Hellenic Identity, a self-hosted identity and access management server. The company also takes on consulting work in privacy-preserving AI, Go systems architecture, team training, and rapid product development, mainly for teams in finance, healthcare, and government.

Who founded Hellenic Development?

Gerasimos Maropoulos founded Hellenic Development and serves as its CEO. He created the Iris web framework for Go in 2016, which has since gathered 25,000+ GitHub stars, and he has worked in Go for over a decade. He publishes as "kataras" on GitHub. Christos Papadopoulos is the co-founder and CMO, responsible for brand and strategic direction.

What products does Hellenic Development make?

Hellenic Development ships three products. Plexon AI is a desktop AI assistant for Windows, macOS, and Linux that works inside 64 apps with your own accounts, runs 156 agents across 8 domains, and keeps your data on your own machine. Iris is an open-source web framework for Go, licensed BSD-3-Clause, with an application builder the compiler checks, MVC, and dependency injection. Hellenic Identity is a self-hosted IAM server implementing OAuth 2.0 and OpenID Connect with post-quantum cryptography. Two more products are in development: RNS, a multi-tenant push notification gateway, and Patrol, an error tracking and log aggregation service.

Is Iris free to use?

Yes. Iris is open source under the BSD-3-Clause license, which permits commercial use, modification, and redistribution, provided the copyright notice travels with the code. There is no paid tier, no license key, and no cap on requests or environments. The source lives at github.com/kataras/iris and the API reference is published on pkg.go.dev. Iris was first released in 2016 and is maintained by Gerasimos Maropoulos through Hellenic Development, so the framework and the company that backs it share the same author.

Does Plexon AI send my data to a server?

No. Plexon AI runs on your machine and your files, chats, memory, and connector credentials stay there, encrypted on local disk. The Plexon server is stateless and holds no copy of any of it, so it cannot read it. App connectors sign in under your own account and call those apps from your computer. With 6 modes (Code, Plan, Ask, Auto, Orchestrator, Spec) and 10 providers to choose from, the one thing that never changes is where the work happens. Plexon AI is available for Windows, macOS, and Linux.

Can Hellenic Identity be self-hosted?

Yes. Hellenic Identity is designed to be self-hosted, which is the point of it: organisations that cannot send identity data to a third party run it on their own infrastructure. It implements OAuth 2.0 and OpenID Connect, and it uses quantum-resilient cryptography, specifically ML-KEM (Kyber) for key encapsulation and ML-DSA (Dilithium) for digital signatures. It ships with user and group management and an administration panel.

What services does Hellenic Development offer?

Hellenic Development offers four consulting services. AI Integration and Privacy Architecture covers deploying AI systems with verifiable privacy guarantees in regulated environments. System Architecture and Engineering covers Go backends, microservices, and security-first design. Team Enablement and Knowledge Transfer covers hands-on workshops in Go, AI tooling, and systems architecture. Rapid Product Development covers production-quality MVPs delivered in weeks. Engagements start at hellenic.dev/get-in-touch.

Does hellenic.dev track visitors?

No. The hellenic.dev website loads no analytics service, no tracking pixels, and no advertising cookies, and it sets no cookies of its own. The site is static HTML, so there is no session to follow you between pages and no profile to sell. The only information you ever send is what you type into the contact form and submit deliberately. Hellenic Development measures the site through Google Search Console instead, which reports search queries and indexing status without identifying anyone. The full policy is published at hellenic.dev/privacy.

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Foundational software for the modern developer.

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