如果您可以放弃仅限 Windows 的跨平台要求，那么 Manifold System 将是一个不错的选择。非常实惠且易于使用 Windows 上的现代开发工具。
If you can drop the cross-platform requirement for Windows-only, then Manifold System would be a good choice. Very affordable and easy to use with modern development tools on Windows.
DotSpatial doesn't tick all of your boxes, but I know there have been some Mono+DotSpatial discussions. It might be worth checking on the state of that work.
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除了 GRASS 之外，
In addition to GRASS
如果您可以放弃仅限 Windows 的跨平台要求，那么 Manifold System 将是一个不错的选择。非常实惠且易于使用 Windows 上的现代开发工具。
If you can drop the cross-platform requirement for Windows-only, then Manifold System would be a good choice. Very affordable and easy to use with modern development tools on Windows.
DotSpatial 并没有满足您的所有需求，但我知道已经有一些 Mono+DotSpatial 讨论。也许值得检查一下这项工作的状态。
还可以查看 spatialite 来获取本地缓存。
DotSpatial doesn't tick all of your boxes, but I know there have been some Mono+DotSpatial discussions. It might be worth checking on the state of that work.
Also checkout spatialite for a local cache.