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

Whew! That's a lot of Firefoxen!