Maps · head to head
CesiumJS vs SW Maps
CesiumJS
Maps
Open-source JavaScript library for creating 3D globes and 2D maps with support
- From
- Free
- Rated
- -
SW Maps
Maps
Free Android GIS data collector that pairs with external RTK GNSS receivers
- From
- Free
- Rated
- -
The short version
- Each has a real cost: CesiumJS the free Community tier does not permit commercial use; SW Maps android only. There is no iOS version and no sign of one, which rules it out for organisations that issue iPhones and iPads to field staff.
- They diverge on capability: CesiumJS covers Core Functionality, SW Maps covers Custom feature layers.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which CesiumJS and SW Maps actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Maps).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in CesiumJS
- Core Functionality
- User Interface
Only in SW Maps
- Custom feature layers
- External GNSS support
- Offline basemaps
- Geospatial PDF layers
- Vector import
- Photo and media capture
- Export formats
- NTRIP client
What people use each for
The jobs each tool is most often brought in to do.
CesiumJS
- Streaming 3D terrain, imagery and building data into web applicationsnot SW Maps
- Tiling and hosting large geospatial and reality capture datasetsnot SW Maps
SW Maps
- An NGO or municipal utility mapping water points, pipe networks or road assets on a budget that cannot absorb per-user GIS subscriptionsnot CesiumJS
- A survey team pairing a low-cost RTK receiver with Android tablets to collect centimetre-accurate attributed features without buying field software seatsnot CesiumJS
- A university field course teaching GNSS data collection where every student needs the tool on their own devicenot CesiumJS
- A consultant doing a one-off asset inventory who needs shapefile or GeoPackage output and does not want to start an annual subscription for a three-week jobnot CesiumJS
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
CesiumJS
- The free Community tier does not permit commercial use
- The cheapest commercial plan is $149 a month for an individual and $524 for a team
- Team accounts are capped at 5 members on both the Commercial and Premium plans
- Three separate quotas apply at once, being storage, monthly streaming and monthly reality modelling gigapixels, and exceeding any one of them constrains the account
- Streaming is capped at 15 GB a month on the free tier
SW Maps
- Android only. There is no iOS version and no sign of one, which rules it out for organisations that issue iPhones and iPads to field staff.
- There is no back end: no user management, no central project sync, no audit trail. Data lives on the device until someone exports it, and a lost tablet is lost data.
- No commercial support contract exists, so an organisation with a compliance requirement for vendor support cannot use it for regulated work regardless of technical fit.
- It is maintained by a small consultancy as a side product of its own project work, so the roadmap follows Softwel’s needs and a feature you depend on may never be prioritised.
- Form logic is basic compared with dedicated survey platforms: no meaningful skip logic, validation or multi-user assignment, so complex questionnaires quickly outgrow it.
Pricing, plan by plan
CesiumJS
FreeNo published plan breakdown. See the CesiumJS review.
SW Maps
Free- SW MapsFree
- All features included
- External RTK GNSS support
- Unlimited layers and exports
Which should you pick?
Choose CesiumJS if
- You need core functionality.
- You want to start without paying.
- You also want user interface.
Choose SW Maps if
- You need custom feature layers.
- You want to start without paying.
- You work on Android.
- You also want external gnss support.
Questions people ask
- Is CesiumJS or SW Maps better?
- Neither clearly leads. CesiumJS starts at Free and SW Maps at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, CesiumJS or SW Maps?
- CesiumJS starts at Free and SW Maps at Free.
- Does CesiumJS or SW Maps run on more platforms?
- CesiumJS runs on Web. SW Maps runs on Android.
- Can I use CesiumJS for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is CesiumJS best used for?
- CesiumJS is most often used for streaming 3d terrain, imagery and building data into web applications, tiling and hosting large geospatial and reality capture datasets. Of those, streaming 3d terrain, imagery and building data into web applications and tiling and hosting large geospatial and reality capture datasets are not what SW Maps is typically brought in for.
- What can CesiumJS do that SW Maps cannot?
- CesiumJS covers Core Functionality, User Interface. SW Maps covers Custom feature layers, External GNSS support, Offline basemaps, Geospatial PDF layers.
Answered from the vendors’ own pages
CesiumJS: Is Cesium ion free for commercial use?
Cesium offers a free Cesium ion community account, but the page does not explicitly state whether the free tier is permitted for commercial use or if restrictions apply to business applications.
SourceSW Maps: Is SW Maps really free?
Yes. It is free with no advertising and no paid tier. There is no subscription and no feature paywall.
CesiumJS: What are the limits of the free Cesium ion community account?
The page only mentions that a free community account is available but does not disclose usage limits, storage quotas, or feature restrictions for the free tier.
SourceSW Maps: Does it support RTK receivers?
Yes, over Bluetooth or USB serial, with NTRIP correction support, antenna height and per-point fix quality recording.
CesiumJS: What do paid Cesium ion tiers cost?
The page does not provide specific pricing for paid tiers. It directs users to sign up for a free community account or contact Cesium directly for detailed pricing information.
SourceSW Maps: Is there an iOS version?
No. Android only.
SW Maps: Who maintains it?
Softwel, an engineering consultancy in Kathmandu, Nepal, which built it for its own infrastructure projects.
SW Maps: Can we get support?
Not contractually. There is no commercial support agreement, which is the main reason organisations with compliance obligations choose a paid alternative.
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