Open Source
Meet other local people who are interested in Open Source Intelligence (OS-INT), the common meeting ground for government, business, academic, media, and other organizational practitioners of the craft of intelligence.
5,224
members
7
groups
Largest Open Source groups
Newest Open Source groups
Frequently Asked Questions
Yes! Check out open source events happening today here. These are in-person gatherings where you can meet fellow enthusiasts and participate in activities right now.
Discover all the open source events taking place this week here. Plan ahead and join exciting meetups throughout the week.
Absolutely! Find open source events near your location here. Connect with your local community and discover events within your area.
Open Source Events Today
Join in-person Open Source events happening right now
ToughTech: Consistency Trade-offs and AI Workflow Integration
Join us on April 29th at ToughTech for an event exploring real challenges in modern software development. Dive into the trade-offs of distributed systems and eventual consistency, and learn how to turn AI into a practical part of your everyday development workflow. Connect with others, exchange ideas, and gain insights you can register right away - don’t miss out!
Agenda:
* **18:30 "Eventual Consistency: The Troublesome Trade-Off Behind Distributed Systems"** **by Andrius Ragelis**
"No matter the architecture, data can become stale - and sometimes lead to costly issues.
Fast, available, distributed - and occasionally wrong (for a moment).
Let’s explore why these inconsistencies happen, how they manifest in real systems, and how to design around them effectively."
* **19:10** "**From Hype to a Workflow: Integrating AI into the Everyday Work of Development**" **by Vidmantas Varnas**
"Artificial Intelligence is becoming a core part of modern software development, yet many teams still lack practical ways to use it day to day. The key is finding where it truly adds value. From code and documentation to planning, debugging, and knowledge sharing-along with the common challenges and pitfalls."
* **20:00 Bytes & Bites**
The opportunity to become a student or a lecturer in disguise as you mingle, snack and connect with fellow tech enthusiasts is all yours. Don't worry about grades - here, laughter and nods are the ultimate measures of success!
**Tech info about ToughTech:**
* ToughTech journey will start at 18:30 - (guests will be welcome to enjoy snacks and network until 21:30)
* The event will be conducted in LTU language
* [REGISTRACIJA](https://forms.gle/5CEwREBFGFWYpMKW9)
Flutter Forward: AI, Security & Type Safety by Helmes in Lithuania
Register here: [https://shorturl.at/lKy0j](https://shorturl.at/lKy0j)
Learn how modern Flutter teams build smarter apps with AI tools, secure practices, clean code, and interactive UIs.
**Join us for an evening of practical insights into modern Flutter development - where smart tooling, security, and clean architecture come together.**
From turning AI into a reliable pair programmer with Claude Code, to building secure applications and writing safer, more maintainable code with sealed classes, this event focuses on what truly matters in day-to-day development.
We’ll also explore how Flutter is evolving beyond traditional UI patterns, diving into generative interfaces that enable richer, more dynamic user experiences. Whether you're looking to improve your workflow, strengthen your app’s security, or level up your code structure, you’ll walk away with practical ideas you can apply immediately.
**Event Lineup:**
**How We Use Claude Code in Helmes**
*By **Titas Černiauskas**, Senior Flutter Engineer at Helmes*
**Security Practices for Flutter Apps**
*By **Nazarii Honcharenko**, Mid Flutter Engineer at Helmes*
**No Case Left Behind: Sealed Classes in Flutter**
*By **Petras Bartušis**, Flutter Lead at Helmes*
Guest Speaker:
**Beyond the Chat Bubble: Mastering Generative UI in Flutter**
*By **Mangirdas Kazlauskas**, Google Developer Expert for Flutter & Dart*
We’d love for you to stay and connect with us—before and after the talks—on our rooftop terrace. Ask questions, exchange ideas, and enjoy great company over snacks and drinks.
🕡 **6:30 PM** – Event starts
🕗 **8:10 PM** – Talks wrap up (networking until 9:00 PM)
📍 **Helmes office**, K. Donelaičio st. 60, Kaunas
🗣️ **Language:** English
🎟️ **Free ticket** – Reserve your seat now on **Eventbrite**
Register here: [https://shorturl.at/lKy0j](https://shorturl.at/lKy0j)
An evening of Flutter expertise, hands-on tips, and networking awaits - come learn, connect, and see you there!
Open Source Events This Week
Discover what is happening in the next few days
ToughTech: Consistency Trade-offs and AI Workflow Integration
Join us on April 29th at ToughTech for an event exploring real challenges in modern software development. Dive into the trade-offs of distributed systems and eventual consistency, and learn how to turn AI into a practical part of your everyday development workflow. Connect with others, exchange ideas, and gain insights you can register right away - don’t miss out!
Agenda:
* **18:30 "Eventual Consistency: The Troublesome Trade-Off Behind Distributed Systems"** **by Andrius Ragelis**
"No matter the architecture, data can become stale - and sometimes lead to costly issues.
Fast, available, distributed - and occasionally wrong (for a moment).
Let’s explore why these inconsistencies happen, how they manifest in real systems, and how to design around them effectively."
* **19:10** "**From Hype to a Workflow: Integrating AI into the Everyday Work of Development**" **by Vidmantas Varnas**
"Artificial Intelligence is becoming a core part of modern software development, yet many teams still lack practical ways to use it day to day. The key is finding where it truly adds value. From code and documentation to planning, debugging, and knowledge sharing-along with the common challenges and pitfalls."
* **20:00 Bytes & Bites**
The opportunity to become a student or a lecturer in disguise as you mingle, snack and connect with fellow tech enthusiasts is all yours. Don't worry about grades - here, laughter and nods are the ultimate measures of success!
**Tech info about ToughTech:**
* ToughTech journey will start at 18:30 - (guests will be welcome to enjoy snacks and network until 21:30)
* The event will be conducted in LTU language
* [REGISTRACIJA](https://forms.gle/5CEwREBFGFWYpMKW9)
Flutter Forward: AI, Security & Type Safety by Helmes in Lithuania
Register here: [https://shorturl.at/lKy0j](https://shorturl.at/lKy0j)
Learn how modern Flutter teams build smarter apps with AI tools, secure practices, clean code, and interactive UIs.
**Join us for an evening of practical insights into modern Flutter development - where smart tooling, security, and clean architecture come together.**
From turning AI into a reliable pair programmer with Claude Code, to building secure applications and writing safer, more maintainable code with sealed classes, this event focuses on what truly matters in day-to-day development.
We’ll also explore how Flutter is evolving beyond traditional UI patterns, diving into generative interfaces that enable richer, more dynamic user experiences. Whether you're looking to improve your workflow, strengthen your app’s security, or level up your code structure, you’ll walk away with practical ideas you can apply immediately.
**Event Lineup:**
**How We Use Claude Code in Helmes**
*By **Titas Černiauskas**, Senior Flutter Engineer at Helmes*
**Security Practices for Flutter Apps**
*By **Nazarii Honcharenko**, Mid Flutter Engineer at Helmes*
**No Case Left Behind: Sealed Classes in Flutter**
*By **Petras Bartušis**, Flutter Lead at Helmes*
Guest Speaker:
**Beyond the Chat Bubble: Mastering Generative UI in Flutter**
*By **Mangirdas Kazlauskas**, Google Developer Expert for Flutter & Dart*
We’d love for you to stay and connect with us—before and after the talks—on our rooftop terrace. Ask questions, exchange ideas, and enjoy great company over snacks and drinks.
🕡 **6:30 PM** – Event starts
🕗 **8:10 PM** – Talks wrap up (networking until 9:00 PM)
📍 **Helmes office**, K. Donelaičio st. 60, Kaunas
🗣️ **Language:** English
🎟️ **Free ticket** – Reserve your seat now on **Eventbrite**
Register here: [https://shorturl.at/lKy0j](https://shorturl.at/lKy0j)
An evening of Flutter expertise, hands-on tips, and networking awaits - come learn, connect, and see you there!
Open Source Events Near You
Connect with your local Open Source community
Columbus Code & Coffee 86 @ Improving
Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you!
**What to Expect at the Intro Circle**
\~\~\~\~\~\~\~\~\~\~\~\~\~
Near the beginning of the event (1:30 pm), we do a standup:
* Organizer announcements, updates, and logistics
Round 1 - (7 secs max):
* Your name
* What you're working on
* What you can help others with
Round 2:
* Community events you wanna plug. If none, that's cool too.
Round 3:
* Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool.
After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!
Columbus Code & Coffee 87 @ Improving
Columbus Code & Coffee is an inclusive, informal co-working session. People of all skill levels attend, and we love it that way. Many people (optionally) bring projects to work on, and many other people (optionally) socialize the entire time. It's entirely up to you!
**What to Expect at the Intro Circle**
\~\~\~\~\~\~\~\~\~\~\~\~\~
Near the beginning of the event (1:30 pm), we do a standup:
* Organizer announcements, updates, and logistics
Round 1 - (7 secs max):
* Your name
* What you're working on
* What you can help others with
Round 2:
* Community events you wanna plug. If none, that's cool too.
Round 3:
* Job opportunities you're hiring for OR announce that you are looking for one. If none, that's cool.
After the introduction circle, everything is self-organized! Feel free to work alone, pair up, attend one of our workshops/presentations, or mingle!
Libera Animae - Freeing the Soul
Main Library, Meeting Room 2B
Join us for a welcoming evening of reflection, gentle music, and meaningful conversation. We’ll begin with a short grounding moment, followed by a brief reading from spiritual or philosophical traditions, and an open reflection circle where participants can share (or simply listen).
Libera Animae is an interfaith community focused on inner growth, creativity, and authentic connection.
All backgrounds are welcome.
Cocoaheads
Come out to Improving for our monthly iOS and Mac meetings.
This Month's Presentation:
Nothing yet. (You should volunteer).
What is Cocoaheads (http://cocoaheads.org/)?
CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics.
What is BuckeyeCocoa (http://buckeyecocoa.org/)?
BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend.
Presentations!
Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website.
To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter.
Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/
Columbus HUG April
Want to be a speaker? submit your talk to our Call for Presenters!!!
https://sessionize.com/cbus-hug-2026/
IxDA Chat ‘n Pancakes
It feels like we just saw each other 🤷. Join members of the local design and UX community for our monthly breakfast. For May we’re stopping in for Rooh’s popup breakfast/cafe concept. You know someone is getting the lobster yuzu croissant, and that’s not even the prettiest thing on the menu!.














