add: comparison matrix (#1)

Along with some preliminary texts.

Signed-off-by: Gaukas Wang <[email protected]>

_config.yml

@@ -33,3 +33,31 @@ plugins:
 exclude:
   - LICENSE
   - README.md
+
+aux_links:
+  Refraction Networking: "https://refraction.network/"
+  FOCI 2024 Paper: "https://www.petsymposium.org/foci/2024/foci-2024-0003.php"
+
+# External navigation links
+nav_external_links:
+  - title: refraction-networking/water
+    url: https://github.com/refraction-networking/water
+  - title: refraction-networking/water-rs
+    url: https://github.com/refraction-networking/water-rs
+
+callouts_level: quiet # or loud
+callouts:
+  highlight:
+    color: yellow
+  important:
+    title: Important
+    color: blue
+  new:
+    title: New
+    color: green
+  note:
+    title: Note
+    color: purple
+  warning:
+    title: Warning
+    color: red

comparison.md

@@ -0,0 +1,28 @@
+---
+layout: page
+title: Comparisons
+permalink: /comparisons.html
+---
+
+# Comparisons
+
+## WATER vs. other pluggable transport designs
+
+We evaluate WATER against other pluggable transport designs in terms of the following features:
+- **Hot-swappable**: Can the transport be loaded and unloaded without recompling the host application?
+- **Host Isolation**: Does the transport execute in an isolated environment (e.g., a sandbox) and with limited access to the host resources? 
+- **Compatibility Guarantee**: Can the host application be transport-agnostic and still work with any transport that implements the interface?
+- **Cross-language Deployment**: Can the transport be implemented in a different programming language than the host application?
+
+
+|    Feature     | PTs | Marionette | Proteus | WATER |
+|----------------|------|------------|---------|-------|
+| Hot-swappable  | ❌ | ✅ | ✅ | ✅ |
+| Host Isolation | ❌ | ⚠️ | ✅ | ✅ |
+| Compatibility Guarantee | ❌ | ⚠️ | ✅ | ✅ |
+| Cross-language Deployment | ❌ | ❌ | ❌ | ✅ |
+
+### References
+- PTs ([pluggabletransports.info](https://www.pluggabletransports.info/))
+- Marionette: A Programmable Network Traffic Obfuscation System ([USENIX Security'15](https://www.usenix.org/conference/usenixsecurity15/technical-sessions/presentation/dyer))
+- Proteus: Programmable Protocols for Censorship Circumvention ([FOCI 2023](https://www.petsymposium.org/foci/2023/foci-2023-0013.php))

index.md

@@ -7,4 +7,10 @@ layout: home
 
 # WATER: WebAssembly Transport Executables Runtime
 
-Documentation under construction. Please check back later.
+This site hosts the online documentation for Project WATER: [refraction-networking/water](https://github.com/refraction-networking/water) and [refraction-networking/water-rs](https://github.com/refraction-networking/water-rs). 
+
+## WATER
+
+WATER stands for WebAssembly Transport Executables Runtime, a novel approach to building pluggable network transports using WebAssembly. Comparing to other designs, WATER in general provides better flexibility and security, more consistent development and deployment experience, and better performance. 
+
+A matrix comparing WATER with other pluggable transport designs is available [here](comparisons.html#water-vs-other-pluggable-transport-designs).