diff --git a/dependencies.yaml b/dependencies.yaml
new file mode 100644
index 0000000..b3b0ce2
--- /dev/null
+++ b/dependencies.yaml
@@ -0,0 +1,3 @@
+name: Dependency Funding Tool
+dependencies:
+    "https://codeberg.org/developers/maintain-website-tool/raw/branch/main/dependencies.yaml" : 0.21
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..e69de29
diff --git a/src/main.py b/src/main.py
new file mode 100644
index 0000000..b35e21b
--- /dev/null
+++ b/src/main.py
@@ -0,0 +1,18 @@
+#!/bin/env python3
+import argparse
+
+
+def main():
+    parser = argparse.ArgumentParser(prog="dependency-funding-tool")
+    parser.set-defaults(func=lambda args: parser.print_usage())
+
+    subparsers = parser.add_subparsers()
+
+    trace(subparsers)
+    crawl(subparsers)
+
+    args = parser.parser_args()
+    args.func(args)
+
+if __name__ == "__main__":
+    main()
diff --git a/src/net.py b/src/net.py
new file mode 100644
index 0000000..6693e99
--- /dev/null
+++ b/src/net.py
@@ -0,0 +1,13 @@
+def crawl_urls(locations, fn):
+    def crawler(unchecked, result):
+        unchecked_, result_
+
+    with multiprocessing.Manager() as manager:
+        unchecked = manager.dict({ location: None for location in locations })
+
+        result = manager.dict()
+
+        with multiprocessing.Pool(processes) as pool:
+            pool.map(crawler, [(unchecked, result) for _ in range(processes)])
+
+        return result
diff --git a/src/parallel.py b/src/parallel.py
new file mode 100644
index 0000000..25133dc
--- /dev/null
+++ b/src/parallel.py
@@ -0,0 +1,29 @@
+"""
+Execute a process in parallel where individual runs
+may spawn more runs.
+"""
+
+def parallel(fn, start, processes=6):
+    with multiprocessing.Manager() as manager:
+        results = manager.dict()
+        unchecked = manager.dict({key: None for key in start })
+
+        with multiprocessing.Pool(processes) as pool:
+            pool.map(execute_process, [(results, unchecked, fn) for _ in range(processes)])
+
+        return dict(results)
+
+def execute_process(args):
+    results, unchecked, fn = args
+
+    while len(unchecked) != 0:
+        key, _ = unchecked.popitem()
+
+        try:
+            results[key], unchecked_ = fn(key, results=results, unchecked=unchecked)
+
+            for k in unchecked_:
+                if k not in results:
+                    unchecked[k] = None
+        except Exception as e:
+            continue
diff --git a/src/trace.py b/src/trace.py
new file mode 100644
index 0000000..d2be053
--- /dev/null
+++ b/src/trace.py
@@ -0,0 +1,41 @@
+from .io import load_cfg, load_index
+from .parallel import parallel
+import requests
+
+def trace(args):
+    cfg = load_cfg(args.config)
+    index = load_index(args.index)
+
+    start_projects = load_start_projects(args.start_projects)
+
+    projects = parallel(fetch_project, start_projects, processes=args.processes)
+
+    for project in start_projects:
+        dependencies = dependencies_between(project, projects, processes=args.processes)
+
+def dependencies_between(start_project, projects, processes=6):
+    dependencies = {}
+    for project in projects:
+        paths = paths_between(start_project, project, projects, processes=processes)
+
+        dependencies[project] = sum([product(path) for path in paths])/len(paths)
+
+def paths_between(start, end, projects, processes = 6):
+    paths = []
+
+    if start == end:
+        return paths
+    else:
+        return start,
+
+
+def product(xs):
+    value = 1
+    for x in xs:
+        value *= x
+    return value
+
+def fetch_project(url):
+    project = requests.get(url).json()
+
+    return project, project["dependencies"].keys()