Longdo is a Thai online services and technology brand focused on helping people access useful information and supporting a learning-oriented community. Its website and applications offer a range of tools, including free services for everyday use. Longdo Dict provides dictionary and language-learning resources, with features such as synonym searches, vocabulary collections, and word-family tools for English, Chinese, and Japanese learners.

Longdo Map offers mapping and location information, alongside traffic updates and weather services, including rainfall and forecast information. For developers and businesses, Longdo provides APIs for map and geographic data, weather information, spelling checks, and review-related functions, enabling these services to be incorporated into other applications. The company also offers mapping data access through REST APIs and invites businesses to share accurate branch information through its map partnership program.

Longdo’s articles and guides cover language learning, pronunciation, vocabulary, technology, and practical uses of its services. By combining public-facing information tools with resources for developers, Longdo aims to make useful data accessible and encourage people to learn, explore, and try new ideas