diff --git a/test/data/software-versions.csv b/test/data/software-versions.csv
new file mode 100644
index 0000000000..9f8a6496a5
--- /dev/null
+++ b/test/data/software-versions.csv
@@ -0,0 +1,431 @@
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diff --git a/test/output/softwareVersions.svg b/test/output/softwareVersions.svg
new file mode 100644
index 0000000000..ef91ed9fde
--- /dev/null
+++ b/test/output/softwareVersions.svg
@@ -0,0 +1,51 @@
+<svg class="plot" fill="currentColor" text-anchor="middle" width="640" height="60" viewBox="0 0 640 60" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+  <g transform="translate(0,30)" fill="none" text-anchor="middle">
+    <g class="tick" opacity="1" transform="translate(20.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">0</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(80.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">10</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(140.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">20</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(200.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">30</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(260.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">40</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(320.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">50</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(380.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">60</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(440.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">70</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(500.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">80</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(560.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">90</text>
+    </g>
+    <g class="tick" opacity="1" transform="translate(620.5,0)">
+      <line stroke="currentColor" y2="6"></line><text fill="currentColor" y="9" dy="0.71em">100</text>
+    </g><text fill="currentColor" transform="translate(640,30)" dy="-0.32em" text-anchor="end">Frequency (%) →</text>
+  </g>
+  <g>
+    <rect x="20.5" width="299" y="0" height="30" fill="#c6dbef"></rect>
+    <rect x="320.5" width="135.7441860465117" y="0" height="30" fill="#6baed6"></rect>
+    <rect x="457.2441860465117" width="65.9767441860464" y="0" height="30" fill="#084594"></rect>
+    <rect x="524.2209302325581" width="35.27906976744191" y="0" height="30" fill="#9ecae1"></rect>
+    <rect x="560.5" width="28.30232558139528" y="0" height="30" fill="#4292c6"></rect>
+    <rect x="589.8023255813953" width="15.7441860465118" y="0" height="30" fill="#2171b5"></rect>
+    <rect x="606.5465116279071" width="12.95348837209292" y="0" height="30" fill="#eff3ff"></rect>
+  </g>
+  <g transform="translate(0.5,0.5)"><text dy="0.32em" x="170" y="15">348</text><text dy="0.32em" x="388.3720930232558" y="15">368</text><text dy="0.32em" x="490.2325581395348" y="15">429</text><text dy="0.32em" x="541.860465116279" y="15">359</text><text dy="0.32em" x="574.6511627906978" y="15">369</text><text dy="0.32em" x="597.6744186046511" y="15">381</text><text dy="0.32em" x="613.0232558139534" y="15">324</text></g>
+  <g stroke="currentColor" transform="translate(0.5,0)">
+    <line x1="20" x2="20" y1="0" y2="30"></line>
+    <line x1="620" x2="620" y1="0" y2="30"></line>
+  </g>
+</svg>
\ No newline at end of file
diff --git a/test/plots/index.js b/test/plots/index.js
index 67812e74c1..694adcd6ec 100644
--- a/test/plots/index.js
+++ b/test/plots/index.js
@@ -88,6 +88,7 @@ export {default as sfTemperatureBandArea} from "./sf-temperature-band-area.js";
 export {default as simpsonsRatings} from "./simpsons-ratings.js";
 export {default as simpsonsRatingsDots} from "./simpsons-ratings-dots.js";
 export {default as simpsonsViews} from "./simpsons-views.js";
+export {default as softwareVersions} from "./software-versions.js";
 export {default as stackedBar} from "./stacked-bar.js";
 export {default as stocksIndex} from "./stocks-index.js";
 export {default as travelersYearOverYear} from "./travelers-year-over-year.js";
diff --git a/test/plots/software-versions.js b/test/plots/software-versions.js
new file mode 100644
index 0000000000..b691e7a069
--- /dev/null
+++ b/test/plots/software-versions.js
@@ -0,0 +1,41 @@
+import * as Plot from "@observablehq/plot";
+import * as d3 from "d3";
+
+export default async function() {
+  const data = await d3.csv("data/software-versions.csv");
+
+  function stack({text, fill, ...options} = {}) {
+    return Plot.stackX(
+      {
+        ...Plot.groupZ(
+          {
+            x: "proportion",
+            text: "first"
+          },
+          {
+            z: "version",
+            order: "value",
+            text,
+            fill
+          }
+        ),
+        reverse: true,
+        ...options
+      }
+    );
+  }
+
+  return Plot.plot({
+    x: {
+      percent: true
+    },
+    color: {
+      scheme: "blues"
+    },
+    marks: [
+      Plot.barX(data, stack({fill: "version", insetLeft: 0.5, insetRight: 0.5})),
+      Plot.text(data, stack({text: "version"})),
+      Plot.ruleX([0, 1])
+    ]
+  });
+}