Karrio – Open-Source Multi-Carrier Shipping API
Hey HN! Daniel and Delali here; we are working on Karrio, an open-source shipping infrastructure. Our focus is on making it easy to integrate shipping into platforms. With Karrio’s open-source and universal shipping API, you can set up connections to a worldwide network of shipping carriers for national, international and last-mile services but also build your own network of local carriers. You can seamlessly add built-in shipping functionalities to your platform, enabling users to fetch live rates, buy labels, track packages, and more. You can check out our Github repo here:…
In plain words
Karrio is an open-source shipping API that enables developers to integrate shipping functionality into platforms. It provides connections to a global network of carriers for national, international, and last-mile delivery, while also supporting custom local carrier networks. Users can fetch live rates, purchase shipping labels, and track packages through a universal API. The platform serves as an alternative to building shipping systems in-house or relying on proprietary SaaS solutions.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN! Daniel and Delali here; we are working on Karrio, an open-source shipping infrastructure. Our focus is on making it easy to integrate shipping into platforms. With Karrio’s open-source and universal shipping API, you can set up connections to a worldwide network of shipping carriers for national, international and last-mile services but also build your own network of local carriers. You can seamlessly add built-in shipping functionalities to your platform, enabling users to fetch live rates, buy labels, track packages, and more. You can check out our Github repo here: https://github.com/karrioapi/karrio. For developers in the logistics space, carrier integration is often a painful experience. We believe that an open-source solution is a viable alternative to building a shipping system from scratch in-house or getting locked in with a Saas multi-carrier API. Karrio aims to put you in control of your shipping network with lower engineering costs. (see how to get started here: https://docs.karrio.io/quick-start). So far, we’ve built a unified shipping API compatible with most major carriers, such as FedEx, UPS, DHL, USPS, Canada Post, and more. With the flexibility of open-source, Karrio has interoperability with other multi-carriers and 3PL (EasyPost, Freightcom, etc.). And we plan on building more integrations. Karrio is evolving with the help of our community of early adopters, and we want to keep that going. Checkout our README to get involved with the project, file issues and request or contribute carrier integrations We currently offer a managed cloud service in private beta, with a pay-as-you-go plan for platforms and custom prices for enterprise customers. Don’t hesitate to reach out if you have any questions. We would love to hear your feedback and how Karrio can help with your project.
More dev tools this month
the category →
Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com
OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com
Launched alongside, April 2023
the whole month →
- G4
Hi HN, Today we’re launching GPT-4 answers on Phind.com, a developer-focused search engine that uses generative AI to browse the web and answer technical questions, complete with code examples and detailed explanations. Unlike vanilla GPT-4, Phind feeds in relevant websites and technical documentation, reducing the model’s hallucination and keeping it up-to-date. To use it, simply enable the “Expert” toggle before doing a search. GPT-4 is making a night-and-day difference in terms of answer quality. For a question like “How can I RLHF a LLaMa model”, Phind in Expert mode delivers a…
AI · 2023 · phind.com
