This week, we took a closer look at the Bulgarian startup ecosystem. Over the past few years, Bulgaria has slightly strengthened its position as a rising tech hub in Southeast Europe, supported by strong technical universities, an active community of accelerators and venture funds, and a growing pool of international talent choosing Sofia as their base. Competitive operating costs, a strategic location and a fast-evolving digital economy have helped Bulgaria attract founders building across fintech, health, AI, robotics and more.

Today, we’re introducing you to 10 promising Bulgarian startups to watch in 2026. We focused on innovation-driven startups founded in recent years that have secured early traction through funding, product development or real-world deployments. All of them are headquartered in Sofia, reflecting the city’s role as the country’s central engine of entrepreneurship.

Founded in 2024, Agent Harbor is a platform designed to help developers coordinate and manage long-horizon tasks across multiple AI agents. It provides a local sandbox environment with fast startup, consistent replication, and easy rollbacks or session forks. The system supports models such as Claude, Gemini, and Codex, allowing teams to structure and automate their development workflows more efficiently. Founded in 2024, the company has raised €3.44 million to date.

The platform includes mechanisms to detect stalled tasks, resolve deadlocks, and handle failed processes. Developers can run tests across different operating systems, keep full activity logs, and customise file system and network permissions to maintain control over each agent’s environment. Agent Harbor is open source, privacy-focused, and integrates with common developer tools, including terminals, IDEs, and remote management interfaces.

Blue Longevity provides personalised, evidence-based longevity programmes designed to help individuals improve their long-term health. The company combines digital coaching with advanced diagnostics, lifestyle medicine and regenerative therapies to create tailored plans covering areas such as fitness, nutrition and stress reduction. Its model focuses on continuous monitoring and adjustment, ensuring each user’s plan evolves as new data and lifestyle changes are recorded.

Founded in 2024, the startup has raised €2 million to support the development of its platform and the rollout of its longevity hubs. Blue Longevity aims to make modern, science-driven preventive care more accessible by uniting medical and well-being expertise in one structured framework.

Bronia is building a smart technology that can listen to sounds, understand what they are, and pinpoint where they come from. It works by analysing noise in real time and identifying important sounds such as machinery issues, loud urban disturbances or gunshots. The system can then react automatically or send alerts. Bronia’s technology is used in areas like public safety, industrial monitoring and defence, and can also be installed on vehicles or drones.

Founded in 2024, the Sofia-based startup has raised about €500k to develop its platform further. Bronia aims to make sound detection accurate, reliable and easy to deploy so that organisations can monitor their surroundings more effectively and respond quickly when something important happens.

Flataway.ai provides tools that help property managers create and manage direct booking websites for vacation rentals. The platform uses AI to build customised sites quickly, integrate them with existing property management systems and ensure automatic updates to avoid double bookings. Users can also add verified listings from around the world and earn referral fees when guests book through their site.

The young company focuses on helping short-term rental operators reduce their reliance on large online travel agencies by offering features such as global distribution, built-in SEO, automated improvements and secure payments. Its AI website builder aims to simplify the process for property managers who want a modern, fast and cost-effective way to grow their direct booking revenue without relying on traditional web development. Founded in 2023, Flataway.ai has raised €1.15 million to continue developing its product suite.

Huskycare provides cloud-based software designed to simplify the daily operations of outpatient and day care providers. The platform combines planning, billing and digital care documentation in one system, allowing teams to organise visits, manage staff schedules and record services directly with patients.

By automating administrative work such as billing, performance tracking and preparation for audits, Huskycare aims to reduce manual effort and improve the accuracy of care documentation.