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omapsapp
🍃 Organic Maps is a free Android & iOS offline maps app for travelers, tourists, hikers, and cyclists. It uses crowd-sourced OpenStreetMap data and is developed with love by MapsWithMe (MapsMe) founders and our community. No ads, no tracking, no data collection, no crapware. Please donate to support the development!
The document doesn't say which routing engine is used.
I'm currently integrating Motis on a similar initiative (a french open source Web map, https://cartes.app). More is needed to provide a full transit map experience, but Motis does the essential part.
We're not far from transit calculation as an open source commodity in countries that publish their transit data as GTFS. E.g. in France there is a whole team called transport.data.gouv.fr that deploys a website + API and do the necessary to convince and help local transport agencies to respect the law.
Ingesting this whole dataset is not trivial, lots of bugs arise (e.g. Flixbus's agency id : 0 or conflicting calendar_dates.txt ids between different datasets) but a barebone version goes live in 4 seconds (per big agency) of parsing by Motis's Nigiri module.
The developer of Motis is quite involved, and came to Organic Maps's discussion here https://github.com/organicmaps/organicmaps/issues/5331#issue...
Then comes the hardest part IMHO : the UI. Motis provides intermodal routing with the choice of walk / reduced mobility / bicycle / car / car + parking before and after the bus, and all this needs to be integrated in a UI that can rival Google / Apple Maps / Transitapp.com / etc
Organic Maps have very beautiful transit lines representation in the style of Transit app's great work. https://blog.transitapp.com/how-we-built-the-worlds-pretties...
Would be cool if some demo of the extended transit lines could be provided by Organic Maps following this readme file.
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InfluxDB
Purpose built for real-time analytics at any scale. InfluxDB Platform is powered by columnar analytics, optimized for cost-efficient storage, and built with open data standards.
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It is. Especially to do multimodal routing offline.
https://github.com/motis-project/motis/issues/423
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I did implement an A* routing "offline" algorithm based on GTFS data + walking paths (OptiTravel) and built a GTFS server (to easily serve the data, do geospatial queries, ...) a few years ago. Granted that this was a university project, for some cities the calculation was rather intensive (e.g: London). I might be wrong though.
[1]: https://github.com/denysvitali/optitravel
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I'm building a server to produce plans and a GTFS API https://github.com/laem/gtfs
Cartes.app is quite like an Organic Maps for the Web. So I don't have any of the offline limitations that you have, but feel free to explore the code if anything looks interesting. The development is in french but the code is mostly in english.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives