diff --git a/Library/Homebrew/dev-cmd/unbottled.rb b/Library/Homebrew/dev-cmd/unbottled.rb
new file mode 100644
index 0000000000000000000000000000000000000000..f258db70024ce233109fb50bc8349fb1f2bfb7d4
--- /dev/null
+++ b/Library/Homebrew/dev-cmd/unbottled.rb
@@ -0,0 +1,166 @@
+# typed: true
+# frozen_string_literal: true
+
+require "cli/parser"
+require "formula"
+
+module Homebrew
+ extend T::Sig
+
+ module_function
+
+ sig { returns(CLI::Parser) }
+ def unbottled_args
+ Homebrew::CLI::Parser.new do
+ usage_banner <<~EOS
+ `unbottled` [<formula>]
+
+ Outputs the unbottled dependents of formulae.
+ EOS
+ flag "--tag=",
+ description: "Use the specified bottle tag (e.g. big_sur) instead of the current OS."
+ switch "--dependents",
+ description: "Don't get analytics data and sort by number of dependents instead."
+ switch "--total",
+ description: "Output the number of unbottled and total formulae."
+ conflicts "--dependents", "--total"
+ end
+ end
+
+ sig { void }
+ def unbottled
+ args = unbottled_args.parse
+
+ Formulary.enable_factory_cache!
+
+ @bottle_tag = if args.tag.present?
+ args.tag.to_sym
+ else
+ Utils::Bottles.tag
+ end
+
+ if args.named.blank?
+ ohai "Getting formulae..."
+ elsif args.total?
+ raise UsageError, "cannot specify `<formula>` and `--total`."
+ end
+
+ formulae, all_formulae, sort, formula_installs =
+ formulae_all_sort_installs_from_args(args)
+ deps_hash, uses_hash = deps_uses_from_formulae(all_formulae)
+
+ if args.dependents?
+ formula_dependents = {}
+ formulae = formulae.sort_by do |f|
+ dependents = uses_hash[f.name]&.length || 0
+ formula_dependents[f.name] ||= dependents
+ end.reverse
+ end
+
+ if args.total?
+ output_total(formulae)
+ return
+ end
+
+ noun, hash = if args.named.present?
+ [nil, {}]
+ elsif args.dependents?
+ ["dependents", formula_dependents]
+ else
+ ["installs", formula_installs]
+ end
+ output_unbottled(sort, formulae, deps_hash, noun, hash)
+ end
+
+ def formulae_all_sort_installs_from_args(args)
+ if args.named.present?
+ formulae = all_formulae = args.named.to_formulae
+ elsif args.total?
+ formulae = all_formulae = Formula.to_a
+ elsif args.dependents?
+ formulae = all_formulae = Formula.to_a
+
+ sort = " (sorted by installs in the last 90 days)"
+ else
+ formula_installs = {}
+
+ ohai "Getting analytics data..."
+ analytics = Utils::Analytics.formulae_brew_sh_json("analytics/install/90d.json")
+ formulae = analytics["items"].map do |i|
+ f = i["formula"].split.first
+ next if f.include?("/")
+ next if formula_installs[f].present?
+
+ formula_installs[f] = i["count"]
+ begin
+ Formula[f]
+ rescue FormulaUnavailableError
+ nil
+ end
+ end.compact
+ sort = " (sorted by installs in the last 90 days)"
+
+ all_formulae = Formula
+ end
+
+ [formulae, all_formulae, sort, formula_installs]
+ end
+
+ def deps_uses_from_formulae(all_formulae)
+ ohai "Populating dependency tree..."
+
+ deps_hash = {}
+ uses_hash = {}
+
+ all_formulae.each do |f|
+ next unless f.core_formula?
+
+ deps = f.recursive_dependencies do |_, dep|
+ Dependency.prune if dep.optional?
+ end.map(&:to_formula)
+ deps_hash[f.name] = deps
+
+ deps.each do |dep|
+ uses_hash[dep.name] ||= []
+ uses_hash[dep.name] << f
+ end
+ end
+
+ [deps_hash, uses_hash]
+ end
+
+ def output_total(formulae)
+ ohai "Unbottled :#{@bottle_tag} formulae"
+ unbottled_formulae = 0
+
+ formulae.each do |f|
+ next if f.bottle_specification.tag?(@bottle_tag)
+ next if f.bottle_unneeded?
+
+ unbottled_formulae += 1
+ end
+
+ puts "#{unbottled_formulae}/#{formulae.length} remaining."
+ end
+
+ def output_unbottled(sort, formulae, deps_hash, noun, hash)
+ ohai "Unbottled :#{@bottle_tag} dependencies#{sort}"
+ any_found = T.let(false, T::Boolean)
+
+ formulae.each do |f|
+ next if f.bottle_specification.tag?(@bottle_tag)
+
+ deps = Array(deps_hash[f.name]).reject do |dep|
+ dep.bottle_specification.tag?(@bottle_tag) || dep.bottle_unneeded?
+ end
+ next if deps.blank?
+
+ any_found ||= true
+ count = " (#{hash[f.name]} #{noun})" if noun
+ puts "#{f.name}#{count}: #{deps.join(" ")}"
+ end
+ return if any_found
+
+ puts "No unbottled dependencies found!"
+ end
+end
diff --git a/Library/Homebrew/test/dev-cmd/unbottled_spec.rb b/Library/Homebrew/test/dev-cmd/unbottled_spec.rb
new file mode 100644
index 0000000000000000000000000000000000000000..6e54f948b3edebd57f26dc58438db6ba50a786ce
--- /dev/null
+++ b/Library/Homebrew/test/dev-cmd/unbottled_spec.rb
@@ -0,0 +1,8 @@
+# typed: false
+# frozen_string_literal: true
+
+require "cmd/shared_examples/args_parse"
+
+describe "Homebrew.unbottled_args" do
+ it_behaves_like "parseable arguments"
+end
diff --git a/completions/internal_commands_list.txt b/completions/internal_commands_list.txt
index 13cf54e93a95e671672477f10e5126c8c1f8a712..f2c3de6ba2005a92d447397ec1568fe67e70ff4f 100644
--- a/completions/internal_commands_list.txt
+++ b/completions/internal_commands_list.txt
@@ -87,6 +87,7 @@ tc
test
tests
typecheck
+unbottled
uninstal
uninstall
unlink
diff --git a/docs/Manpage.md b/docs/Manpage.md
index 6a9136cc8209800cb7bfaca0345d127e30a36c9d..5af239c2b78f156a3f240fa06453a09acb25c9c8 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -1278,6 +1278,17 @@ Check for typechecking errors using Sorbet.
* `--ignore`:
Ignores input files that contain the given string in their paths (relative to the input path passed to Sorbet).
+### `unbottled` [*`formula`*]
+
+Outputs the unbottled dependents of formulae.
+
+* `--tag`:
+ Use the specified bottle tag (e.g. big_sur) instead of the current OS.
+* `--dependents`:
+ Don't get analytics data and sort by number of dependents instead.
+* `--total`:
+ Output the number of unbottled and total formulae.
+
### `unpack` [*`options`*] *`formula`*
Unpack the source files for *`formula`* into subdirectories of the current
diff --git a/manpages/brew.1 b/manpages/brew.1
index e0e0cb953f5525a2829a55ca6cf78f72eecf6525..5cdaf4721bf125de361ec176dc128c7b1038f9ad 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -1768,6 +1768,21 @@ Typecheck a single file\.
\fB\-\-ignore\fR
Ignores input files that contain the given string in their paths (relative to the input path passed to Sorbet)\.
.
+.SS "\fBunbottled\fR [\fIformula\fR]"
+Outputs the unbottled dependents of formulae\.
+.
+.TP
+\fB\-\-tag\fR
+Use the specified bottle tag (e\.g\. big_sur) instead of the current OS\.
+.
+.TP
+\fB\-\-dependents\fR
+Don\'t get analytics data and sort by number of dependents instead\.
+.
+.TP
+\fB\-\-total\fR
+Output the number of unbottled and total formulae\.
+.
.SS "\fBunpack\fR [\fIoptions\fR] \fIformula\fR"
Unpack the source files for \fIformula\fR into subdirectories of the current working directory\.
.