Another site:
AllTop 200 most popular tests to learn English...
1) Test de niveau anglais (webmaster) 6 770 113
2) Placement test : grammar for beginners (lucile83) 5 978 030
3) A/AN (webmaster) 5 356 076
4) Auxiliary BE (webmaster) 3 219 832
5) Present continuous (webmaster) 2 993 161
6) Present simple (webmaster) 2 895 299
7) Present simple (webmaster) 2 591 911
8) Present continuous (webmaster) 2 422 629
9) Adjectives (webmaster) 2 090 849
10) A/an (anonyme) 2 010 307
11) Present perfect simple (webmaster) 1 633 950
12) Vocabulary - Placement test (bridg) 1 616 929
13) Preterite (webmaster) 1 613 289
14) Short placement test (webmaster) 1 441 435
15) Preterite (webmaster) 1 438 541
16) To be (bridg) 1 403 120
17) What time is it? (webmaster) 1 346 195
18) Present perfect (webmaster) 1 337 947
19) The alphabet in English (webmaster) 1 318 481
20) Adjectives (lucile83) 1 212 981
21) What time is it? (webmaster) 1 203 307
22) Numbers (webmaster) 1 186 974
23) 'A' ou 'An' (anonyme) 1 171 440
24) Two presents: present continuous, present simple (webmaster) 1 145 483
25) To be (bridg) 1 143 236
26) Comparatives / Superlatives (webmaster) 1 094 309
27) Numbers (webmaster) 1 068 082
28) CAN / MUST (webmaster) 1 056 764
29) THE/ A / AN / nothing (webmaster) 1 028 401
30) Comparatives (webmaster) 1 005 348
31) Family life (bridg) 998 423
32) Numbers > 100 (webmaster) 984 816
33) Future (going to/will/present continuous) (anonyme) 960 082
34) Plural (webmaster) 953 744
35) Superlatives (webmaster) 873 002
36) Adjectives (anonyme) 872 705
37) Simple present (bridg) 851 506
38) Spelled words N°1 (bridg) 848 114
39) Placement test beginners: Check your spelling (lucile83) 829 156
40) Introducing oneself (webmaster) 825 968
41) Adverbs of frequency (lucile83) 813 841
42) Family (bridg) 782 885
43) General test-End of high school / Beginning of university (webmaster) 780 644
44) Frequency adverbs (webmaster) 776 241
45) Present simple (lucile83) 775 842
46) Present BE + Ving (bridg) 762 585
47) Genitive (webmaster) 721 963
48) Family tree (anonyme) 717 771
49) Preterite: simple or continuous? (webmaster) 713 928
50) Passive form (lucile83) 708 466
51) Placement test (beginners) (lili73) 699 044
52) Past simple or present perfect (lucile83) 689 510
53) Future (webmaster) 674 673
54) 2 Preterites (webmaster) 659 488
55) Present perfect simple (bridg) 655 430
56) Preterite (webmaster) 616 906
57) List of 200 irregular verbs and audio (bridg) 613 983
58) Modals (webmaster) 611 552
59) Spelled words N°2 (bridg) 607 648
60) Height (webmaster) 605 347
61) Modals (webmaster) 601 363
62) Articles a / an / the (lucile83) 596 696
63) Plural forms (bridg) 575 665
64) Nationalities (webmaster) 573 013
65) Past continuous / Past simple (anonyme) 559 596
66) Irregular plurals (bridg) 552 078
67) Two presents: simple and continuous (webmaster) 548 066
68) Preterite (bridg) 547 277
69) Vocabulary: greeting people (here4u) 536 344
70) Superlatives (frapedur) 533 018
71) Give your opinion (bridg) 530 516
72) Adverbs of Frequency (bridg) 515 884
73) Present simple or continuous (lucile83) 505 414
74) Present perfect / preterite ? (anonyme) 504 512
75) Possessive case (anonyme) 479 330
76) Countries & nationalities (bridg) 471 787
77) 'The' or nothing? (webmaster) 470 251
78) Introducing oneself (easy) (webmaster) 469 897
79) Past tenses (bridg) 468 671
80) Passive voice (webmaster) 460 697
81) Present Simple vs. Past Simple (anonyme) 452 849
82) Questions : how to ask them (lucile83) 446 756
83) General Test II / End of high school / Beginning of universi (webmaster) 445 179
84) IN, ON, AT or TO? (webmaster) 443 564
85) Relative pronouns (webmaster) 442 619
86) Comparative of superiority (lucile83) 435 696
87) How to pronounce the final -ED? (past simple) (webmaster) 435 065
88) Relative clauses (webmaster) 422 067
89) Sounds: [h] (webmaster) 418 736
90) Comparative (anonyme) 411 078
91) A/an/Ø (bridg) 396 592
92) Future simple (lucile83) 394 425
93) This / That / These / Those (webmaster) 391 586
94) Past simple (anonyme) 390 640
95) Conditional (webmaster) 390 177
96) Passive voice (anonyme) 388 869
97) Comparing (webmaster) 387 295
98) Can / could/ may/ might (woodyrun) 378 124
99) Present perfect or past tense (anonyme) 374 784
100) Personal pronouns (anonyme) 370 809
101) Much, many, little and few (felin) 369 794
102) Some, any, no, enough, too/too much/too many (webmaster) 367 374
103) Preterite continuous (BE + -ING) (webmaster) 366 670
104) Genitive case (bridg) 366 398
105) Confusing words - Placement test (bridg) 364 061
106) Irregular verbs (webmaster) 362 487
107) Numbers from 1 to 10 (lucile83) 360 732
108) Past perfect simple, past perfect continuous (anonyme) 360 315
109) Present continuous or present simple (webmaster) 358 884
110) Present perfect or preterite? (anonyme) 353 663
111) Comparative Adjectives (bridg) 351 410
112) Simple Past : regular verbs (anonyme) 351 198
113) Who, Whom, Which, or Whose? (anonyme) 347 545
114) Past simple (video) (lucile83) 346 409
115) Past simple or past continuous (lucile83) 338 199
116) What time is it? (webmaster) 336 816
117) Modals (tinou) 335 715
118) While / When (anonyme) 335 415
119) Modal: may/might (lucile83) 333 366
120) Cardinal and ordinal numbers (anonyme) 327 815
121) Possessive adjectives and pronouns (woodyrun) 322 966
122) The superlative (anonyme) 321 903
123) How to talk about the weather (lili73) 320 792
124) Since and for (lucile83) 317 595
125) Flags (webmaster) 316 796
126) Irregular verbs (bridg) 315 117
127) Prepositions - in, on, at (anonyme) 313 548
128) Pronouns (woodyrun) 310 820
129) Tenses (anonyme) 310 241
130) Placement test 3 (webmaster) 309 802
131) Order of adjectives (webmaster) 305 482
132) Could/Couldn't (laure95) 305 090
133) Adjectives and prepositions (lucile83) 303 619
134) Comparative (anonyme) 303 601
135) Agreement Tags (webmaster) 303 338
136) Asking questions (webmaster) 302 223
137) Present perfect OR simple past? (bridg) 297 705
138) Questions in the past tense (lucile83) 296 530
139) Superlative Adjectives (bridg) 294 761
140) Uncountable nouns (webmaster) 294 605
141) Object pronouns (bridg) 293 099
142) Placement test 1 (lucile83) 291 761
143) Present simple (lucile83) 289 266
144) Prefer/rather (bridg) 288 388
145) Can/Must/Should (laure95) 287 782
146) Passive form (anonyme) 286 726
147) Must or Have to? (woodyrun) 285 854
148) The/an/nothing (bridg) 284 177
149) Past perfect (lili73) 284 100
150) To be (anonyme) 282 904
151) Vocabulary: asking and answering (here4u) 280 366
152) Can and can't (laure95) 278 484
153) Modal verbs (bridg) 276 717
154) Some / Any / no... (bridg) 269 483
155) Days of the week (bridg) 268 886
156) So / neither (anonyme) 263 677
157) Past simple (video) (lucile83) 263 087
158) Used to (bridg) 259 978
159) Past tense (anonyme) 258 636
160) Vocabulary: on the phone (here4u) 258 631
161) Should / must (anonyme) 258 510
162) Find out a quantity (webmaster) 258 281
163) Superlative + and adjective (lucile83) 256 257
164) Present continuous (chnawa) 255 846
165) Articles : a / an / the / Ø (anonyme) 253 100
166) Numbers 1/100 (anonyme) 252 672
167) Comparative and superlative (anonyme) 252 469
168) Modal can (video) (lucile83) 252 373
169) Relatives pronouns (who, which, that...) (anonyme) 247 718
170) Vocabulary: at the restaurant (here4u) 245 571
171) A few, a little, few, little (anonyme) 243 927
172) Would rather / would prefer to (anonyme) 243 744
173) Present continuous and the Going to form (anonyme) 241 928
174) Comparatives (anonyme) 241 627
175) Have something done (anonyme) 239 257
176) Should/ have to/ must (anonyme) 238 388
177) The past (webmaster) 237 447
178) Future continuous and future perfect. (felin) 237 044
179) Used to/would (woodyrun) 236 186
180) How to ask a question in English (bridg) 233 932
181) I wish, if only (felin) 233 637
182) Pluperfect (webmaster) 233 169
183) Countable or Uncountable? (webmaster) 232 503
184) Present simple or continuous (bridg) 230 727
185) Should / shouldn't (anonyme) 230 639
186) Some / any (younes91) 230 315
187) Adjectives - ing and ed (felin) 228 215
188) Hypothesis (webmaster) 227 344
189) Auxiliary BE (lucile83) 225 930
190) Articles a/an/the/0 (bridg) 225 770
191) Article The or nothing (anonyme) 225 339
192) Present perfect with Ever - never - (anonyme) 224 853
193) Present continuous OR Present simple? (bridg) 224 751
194) Must or mustn't (laure95) 223 404
195) Simple Preterite OR Preterite (BE+ing) (webmaster) 222 348
196) Present perfect (bridg) 218 917
197) To / in order to / so as to / so that (irish21) 218 822
198) What time is it ? (anonyme) 217 166
199) Indirect speech (bridg) 215 170
200) Comparison (komiks) 214 247
