diff --git a/lib/licenses.nix b/lib/licenses.nix
index 30ca31ff71f2..a60171e55c12 100644
--- a/lib/licenses.nix
+++ b/lib/licenses.nix
@@ -599,6 +599,11 @@ in mkLicense lset) ({
     url = "https://fedoraproject.org/wiki/Licensing/GPL_Classpath_Exception";
   };
 
+  giftware = {
+    spdxId = "Giftware";
+    fullName = "Giftware License";
+  };
+
   hpnd = {
     spdxId = "HPND";
     fullName = "Historic Permission Notice and Disclaimer";
@@ -609,6 +614,11 @@ in mkLicense lset) ({
     spdxId = "HPND-sell-variant";
   };
 
+  hpndUc = {
+    spdxId = "HPND-UC";
+    fullName = "Historical Permission Notice and Disclaimer - University of California variant";
+  };
+
   # Intel's license, seems free
   iasl = {
     spdxId = "Intel-ACPI";
@@ -894,6 +904,11 @@ in mkLicense lset) ({
     url = "https://raw.githubusercontent.com/netdata/netdata/master/web/gui/v2/LICENSE.md";
   };
 
+  nistSoftware = {
+    spdxId = "NIST-Software";
+    fullName = "NIST Software License";
+  };
+
   nlpl = {
     spdxId = "NLPL";
     fullName = "No Limit Public License";
diff --git a/pkgs/applications/science/biology/conglomerate/default.nix b/pkgs/applications/science/biology/conglomerate/default.nix
index fe1c1f5511d1..d9092b9eeb11 100644
--- a/pkgs/applications/science/biology/conglomerate/default.nix
+++ b/pkgs/applications/science/biology/conglomerate/default.nix
@@ -32,6 +32,6 @@ stdenv.mkDerivation rec {
     description = "More command-line utilities for working with MINC files";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
-    license   = licenses.free;
+    license   = licenses.hpndUc;
   };
 }
diff --git a/pkgs/by-name/al/alephone-apotheosis-x/package.nix b/pkgs/by-name/al/alephone-apotheosis-x/package.nix
index 16bed9fad97e..566b98f9e856 100644
--- a/pkgs/by-name/al/alephone-apotheosis-x/package.nix
+++ b/pkgs/by-name/al/alephone-apotheosis-x/package.nix
@@ -1,4 +1,4 @@
-{ alephone, requireFile }:
+{ lib, alephone, requireFile }:
 
 alephone.makeWrapper rec {
   pname = "apotheosis-x";
@@ -16,5 +16,6 @@ alephone.makeWrapper rec {
   meta = {
     description = "Total conversion for Marathon Infinity running on the Aleph One engine";
     homepage = "https://simplici7y.com/items/apotheosis-x-5";
+    license = lib.licenses.unfree;
   };
 }
diff --git a/pkgs/data/fonts/babelstone-han/default.nix b/pkgs/data/fonts/babelstone-han/default.nix
index 9839295653d1..6dfad42d2086 100644
--- a/pkgs/data/fonts/babelstone-han/default.nix
+++ b/pkgs/data/fonts/babelstone-han/default.nix
@@ -23,7 +23,7 @@ stdenvNoCC.mkDerivation {
     description = "Unicode CJK font with over 36000 Han characters";
     homepage = "https://www.babelstone.co.uk/Fonts/Han.html";
 
-    license = licenses.free;
+    license = licenses.arphicpl;
     platforms = platforms.all;
     maintainers = with maintainers; [ emily ];
   };
diff --git a/pkgs/data/fonts/bront/default.nix b/pkgs/data/fonts/bront/default.nix
index d21c820f127b..36e6adb380df 100644
--- a/pkgs/data/fonts/bront/default.nix
+++ b/pkgs/data/fonts/bront/default.nix
@@ -19,7 +19,7 @@ stdenvNoCC.mkDerivation {
     description = "Bront Fonts";
     longDescription = "Ubuntu Mono Bront and DejaVu Sans Mono Bront fonts.";
     homepage = "https://github.com/chrismwendt/bront";
-    license = licenses.free;
+    license = with licenses; [ bitstreamVera ufl ];
     platforms = platforms.all;
     maintainers = [ maintainers.grburst ];
   };
diff --git a/pkgs/development/chez-modules/chez-mit/default.nix b/pkgs/development/chez-modules/chez-mit/default.nix
index 10407598fb96..677e7fc99194 100644
--- a/pkgs/development/chez-modules/chez-mit/default.nix
+++ b/pkgs/development/chez-modules/chez-mit/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
     description = "This is a MIT/GNU Scheme compatibility library for Chez Scheme";
     homepage = "https://github.com/fedeinthemix/chez-mit/";
     maintainers = [ maintainers.jitwit ];
-    license = licenses.free;
+    license = licenses.gpl3Plus;
   };
 
 }
diff --git a/pkgs/development/chez-modules/chez-srfi/default.nix b/pkgs/development/chez-modules/chez-srfi/default.nix
index 1780a1356c5c..d821e6d01556 100644
--- a/pkgs/development/chez-modules/chez-srfi/default.nix
+++ b/pkgs/development/chez-modules/chez-srfi/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation {
     description = "This package provides a collection of SRFI libraries for Chez Scheme";
     homepage = "https://github.com/fedeinthemix/chez-srfi/";
     maintainers = [ maintainers.jitwit ];
-    license = licenses.free;
+    license = licenses.x11;
   };
 
 }
diff --git a/pkgs/development/libraries/allegro/default.nix b/pkgs/development/libraries/allegro/default.nix
index d9c862443653..0318c3133d63 100644
--- a/pkgs/development/libraries/allegro/default.nix
+++ b/pkgs/development/libraries/allegro/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   meta = with lib; {
     description = "A game programming library";
     homepage = "https://liballeg.org/";
-    license = licenses.free; # giftware
+    license = licenses.giftware;
     maintainers = [ maintainers.raskin ];
     platforms = platforms.linux;
   };
diff --git a/pkgs/development/libraries/arguments/default.nix b/pkgs/development/libraries/arguments/default.nix
index bacb7662386e..524e00dc5a76 100644
--- a/pkgs/development/libraries/arguments/default.nix
+++ b/pkgs/development/libraries/arguments/default.nix
@@ -26,6 +26,6 @@ stdenv.mkDerivation rec {
     description = "Library for argument handling for MINC programs";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
-    license   = licenses.free;
+    license   = licenses.gpl2Plus;
   };
 }
diff --git a/pkgs/development/libraries/science/biology/bicgl/default.nix b/pkgs/development/libraries/science/biology/bicgl/default.nix
index 4f98874b2595..07d64fbd97ed 100644
--- a/pkgs/development/libraries/science/biology/bicgl/default.nix
+++ b/pkgs/development/libraries/science/biology/bicgl/default.nix
@@ -28,6 +28,6 @@ stdenv.mkDerivation rec {
     description = "Brain Imaging Centre graphics library";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
-    license = licenses.free;
+    license = licenses.hpndUc;
   };
 }
diff --git a/pkgs/development/libraries/science/biology/bicpl/default.nix b/pkgs/development/libraries/science/biology/bicpl/default.nix
index 5cf63e342242..c15689aa606a 100644
--- a/pkgs/development/libraries/science/biology/bicpl/default.nix
+++ b/pkgs/development/libraries/science/biology/bicpl/default.nix
@@ -25,6 +25,6 @@ stdenv.mkDerivation rec {
     description = "Brain Imaging Centre programming library";
     maintainers = with maintainers; [ bcdarwin ];
     platforms = platforms.unix;
-    license   = licenses.free;
+    license   = with licenses; [ hpndUc gpl3Plus ];
   };
 }
diff --git a/pkgs/games/90secondportraits/default.nix b/pkgs/games/90secondportraits/default.nix
index 4e8cd387a0e1..bd60c836b636 100644
--- a/pkgs/games/90secondportraits/default.nix
+++ b/pkgs/games/90secondportraits/default.nix
@@ -46,7 +46,7 @@ in stdenv.mkDerivation rec {
     mainProgram = "90secondportraits";
     maintainers = with maintainers; [ leenaars ];
     platforms = platforms.linux;
-    license = licenses.free;
+    license = with licenses; [ zlib cc-by-sa-40 cc-by-sa-30 /* vendored */ x11 mit ];
     downloadPage = "http://tangramgames.dk/games/90secondportraits";
   };
 
diff --git a/pkgs/games/antsimulator/default.nix b/pkgs/games/antsimulator/default.nix
index f6b360831458..69cd7ad1894b 100644
--- a/pkgs/games/antsimulator/default.nix
+++ b/pkgs/games/antsimulator/default.nix
@@ -34,7 +34,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/johnBuffer/AntSimulator";
     description = "Simple Ants simulator";
     mainProgram = "antsimulator";
-    license = licenses.free;
+    license = licenses.mit;
     maintainers = with maintainers; [ ivar ];
     platforms = platforms.unix;
   };
diff --git a/pkgs/os-specific/linux/firmware/b43-firmware-cutter/default.nix b/pkgs/os-specific/linux/firmware/b43-firmware-cutter/default.nix
index 1e46068b2124..65e259667516 100644
--- a/pkgs/os-specific/linux/firmware/b43-firmware-cutter/default.nix
+++ b/pkgs/os-specific/linux/firmware/b43-firmware-cutter/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
     description = "Firmware extractor for cards supported by the b43 kernel module";
     mainProgram = "b43-fwcutter";
     homepage = "http://wireless.kernel.org/en/users/Drivers/b43";
-    license = lib.licenses.free;
+    license = lib.licenses.bsd2;
     platforms = lib.platforms.linux;
   };
 }
diff --git a/pkgs/tools/misc/SP800-90B_EntropyAssessment/default.nix b/pkgs/tools/misc/SP800-90B_EntropyAssessment/default.nix
index 7647d2b9f0b0..3c18621d712d 100644
--- a/pkgs/tools/misc/SP800-90B_EntropyAssessment/default.nix
+++ b/pkgs/tools/misc/SP800-90B_EntropyAssessment/default.nix
@@ -44,7 +44,7 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/usnistgov/SP800-90B_EntropyAssessment";
     description = "Implementation of min-entropy assessment methods included in Special Publication 800-90B";
     platforms = lib.platforms.linux;
-    license = lib.licenses.free; #this software uses the NIST software license
+    license = lib.licenses.nistSoftware;
     maintainers = with lib.maintainers; [ orichter thillux ];
   };
 }