Firefox release notes for developers

Below you'll find links to the developer release notes for every Firefox release. These lovingly-crafted notes provide details on what features and APIs were added and improved and what bugs were eliminated in each version of Firefox. All written to give developers like you the information they need most. You're welcome.

1. Firefox 159 (Nightly)
2. Firefox 158 (Beta)
3. Firefox 157 (Stable)
4. Firefox 156
5. Firefox 155
6. Firefox 154
7. Firefox 153
8. Firefox 152
9. Firefox 151
10. Firefox 150
11. Firefox 149
12. Firefox 148
13. Firefox 147
14. Firefox 146
15. Firefox 145
16. Firefox 144
17. Firefox 143
18. Firefox 142
19. Firefox 141
20. Firefox 140
21. Firefox 139
22. Firefox 138
23. Firefox 137
24. Firefox 136
25. Firefox 135
26. Firefox 134
27. Firefox 133
28. Firefox 132
29. Firefox 131
30. Firefox 130
31. Firefox 129
32. Firefox 128
33. Firefox 127
34. Firefox 126
35. Firefox 125
36. Firefox 124
37. Firefox 123
38. Firefox 122
39. Firefox 121
40. Firefox 120
41. Firefox 119
42. Firefox 118
43. Firefox 117
44. Firefox 116
45. Firefox 115
46. Firefox 114
47. Firefox 113
48. Firefox 112
49. Firefox 111
50. Firefox 110
51. Firefox 109
52. Firefox 108
53. Firefox 107
54. Firefox 106
55. Firefox 105
56. Firefox 104
57. Firefox 103
58. Firefox 102
59. Firefox 101
60. Firefox 100
61. Firefox 99
62. Firefox 98
63. Firefox 97
64. Firefox 96
65. Firefox 95
66. Firefox 94
67. Firefox 93
68. Firefox 92
69. Firefox 91
70. Firefox 90
71. Firefox 89
72. Firefox 88
73. Firefox 87
74. Firefox 86
75. Firefox 85
76. Firefox 84
77. Firefox 83
78. Firefox 82
79. Firefox 81
80. Firefox 80
81. Firefox 79
82. Firefox 78
83. Firefox 77
84. Firefox 76
85. Firefox 75
86. Firefox 74
87. Firefox 73
88. Firefox 72
89. Firefox 71
90. Firefox 70
91. Firefox 69
92. Firefox 68
93. Firefox 67
94. Firefox 66
95. Firefox 65
96. Firefox 64
97. Firefox 63
98. Firefox 62
99. Firefox 61
100. Firefox 60
101. Firefox 59
102. Firefox 58
103. Firefox 57
104. Firefox 56
105. Firefox 55
106. Firefox 54
107. Firefox 53
108. Firefox 52
109. Firefox 51
110. Firefox 50
111. Firefox 49
112. Firefox 48
113. Firefox 47
114. Firefox 46
115. Firefox 45
116. Firefox 44
117. Firefox 43
118. Firefox 42
119. Firefox 41
120. Firefox 40
121. Firefox 39
122. Firefox 38
123. Firefox 37
124. Firefox 36
125. Firefox 35
126. Firefox 34
127. Firefox 33
128. Firefox 32
129. Firefox 31
130. Firefox 30
131. Firefox 29
132. Firefox 28
133. Firefox 27
134. Firefox 26
135. Firefox 25
136. Firefox 24
137. Firefox 23
138. Firefox 22
139. Firefox 21
140. Firefox 20
141. Firefox 19
142. Firefox 18
143. Firefox 17
144. Firefox 16
145. Firefox 15
146. Firefox 14
147. Firefox 13
148. Firefox 12
149. Firefox 11
150. Firefox 10
151. Firefox 9
152. Firefox 8
153. Firefox 7
154. Firefox 6
155. Firefox 5
156. Firefox 4
157. Firefox 3.6
158. Firefox 3.5
159. Firefox 3
160. Firefox 2
161. Firefox 1.5

Whew! That's a lot of Firefoxen!