Credits

Maps

• Map data © OpenStreetMap contributors, under the Open Database License (ODbL 1.0): openstreetmap.org/copyright. Packaged by Protomaps.
• Map style and tiles layout: Protomaps basemaps (BSD-3-Clause; tile schema CC0). Map fonts: Noto Sans (SIL Open Font License 1.1).
• Maps are drawn with MapLibre GL JS (BSD-3-Clause).
• Boundaries of Bangladesh’s divisions, districts and upazilas: Bangladesh Bureau of Statistics and OCHA, via geoBoundaries (CC BY 3.0 IGO; divisions CC0). Runfola, D. et al. (2020) geoBoundaries: A global database of political administrative boundaries. PLoS ONE 15(4): e0231866.
• Bengali names of upazilas: nuhil/bangladesh-geocode (MIT, © 2014 Nuhil Mehdy).

Places

• The descriptions and positions of the first places are from Wikipedia (CC BY-SA 4.0), each credited with a link in the description; positions missing there are from Wikidata (CC0). Text taken from Wikipedia stays under that licence.
• Photos of those places are from Wikimedia Commons. The author and licence of each photo are shown in its caption.
• Everything else about a place (prices, permits, network coverage, tips) is contributed by travellers.

Countries and airports

• Country codes, English names and currencies: GeoNames (CC BY 4.0), geonames.org.
• Regions and sub-regions: the United Nations’ M49 standard, from the listing ISO-3166-Countries-with-Regional-Codes (CC BY-SA 4.0).
• Bengali names of countries: Wikidata (CC0) and Unicode CLDR (Unicode License).
• Airports: OurAirports (public domain), ourairports.com.

The trip assistant

• Flight and hotel prices are looked up through SerpApi (Google Flights and Google Hotels) and shown with the day they were looked up. The airline is named as where a price is from.
• Exchange rates: exchangerate-api.com.
• Some costs and tips are from the open travel guide Wikivoyage (CC BY-SA 4.0), written in our own words and marked as such beside each figure.
• Other costs, tips and routes are from travellers’ experience collected by our team, with the day they were last updated.
• Questions that our word lists cannot read, and the wording of some answers, are handled by the Claude model of Anthropic. It supplies no price and no fact.

Food Passport

• Cards are set in Hind Siliguri (SIL Open Font License 1.1).

Software

The site is built with open-source software, among it: Next.js and React (MIT), NestJS (MIT), PostgreSQL (PostgreSQL License) and PostGIS (GPL-2.0), Drizzle ORM (Apache-2.0), Redis, Meilisearch (MIT), Socket.IO (MIT), Tailwind CSS (MIT), shadcn/ui and Radix UI (MIT), Lucide icons (ISC), next-intl (MIT), Zod (MIT) and TanStack Query (MIT).